Clifford A Henricksen: Difference between revisions

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# US Patent 4,050,541 (Acoustical transformer for horn-type loudspeaker Altec "Tangerine " phase plug) <ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,050,541.PN.&OS=PN/4,050,541&RS=PN/4,050,541 US Patent 4,050,541 (Acoustical transformer for horn-type loudspeaker Altec "Tangerine " phase plug)]</ref>

# US Patent 4,187,926 (Loudspeaker horn Altec “Manta-Ray” diffraction-slot constant-directivity horn) <ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,187,926.PN.&OS=PN/4,187,926&RS=PN/4,187,926 US Patent 4,187,926 (Loudspeaker horn Altec “Manta-Ray” diffraction-slot constant-directivity horn)]</ref>

# US Patent 4,130,023 (Auto-Q directivity measurement method) discussed in above paper

# US Patent 4,130,023 (Method and apparatus for testing and evaluating loudspeaker performance Auto-Q directivity measurement method) discussed in above paper<ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,130,023.PN.&OS=PN/4,130,023&RS=PN/4,130,023 US Patent 4,130,023 (Method and apparatus for testing and evaluating loudspeaker performance Auto-Q directivity measurement method)]</ref>

# US Patent 4,811,403 (US Sound/Bose Corporation lightweight loudspeaker systems construction method) 3/7/89

# US Patent 4,811,403 (Ultralight loudspeaker enclosures US Sound/Bose Corporation lightweight loudspeaker systems construction method) 3/7/89 <ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,811,403.PN.&OS=PN/4,811,403&RS=PN/4,811,403 US Patent 4,811,403 (Ultralight loudspeaker enclosures US Sound/Bose Corporation lightweight loudspeaker systems construction method)]</ref>

# Other patents pending

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 # US Patent 4,050,541 (Acoustical transformer for horn-type loudspeaker  Altec "Tangerine " phase plug) <ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,050,541.PN.&OS=PN/4,050,541&RS=PN/4,050,541 US Patent 4,050,541 (Acoustical transformer for horn-type loudspeaker Altec "Tangerine " phase plug)]</ref>
 # US Patent 4,187,926 (Loudspeaker horn Altec “Manta-Ray” diffraction-slot constant-directivity horn) <ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,187,926.PN.&OS=PN/4,187,926&RS=PN/4,187,926 US Patent 4,187,926 (Loudspeaker horn Altec “Manta-Ray” diffraction-slot constant-directivity horn)]</ref>
-# US Patent 4,130,023 (Auto-Q directivity measurement method) discussed in above paper
+# US Patent 4,130,023 (Method and apparatus for testing and evaluating loudspeaker performance Auto-Q directivity measurement method) discussed in above paper<ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,130,023.PN.&OS=PN/4,130,023&RS=PN/4,130,023 US Patent 4,130,023 (Method and apparatus for testing and evaluating loudspeaker performance Auto-Q directivity measurement method)]</ref>
-# US Patent 4,811,403 (US Sound/Bose Corporation lightweight loudspeaker systems construction method) 3/7/89
+# US Patent 4,811,403 (Ultralight loudspeaker enclosures US Sound/Bose Corporation lightweight loudspeaker systems construction method) 3/7/89 <ref>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4,811,403.PN.&OS=PN/4,811,403&RS=PN/4,811,403 US Patent 4,811,403 (Ultralight loudspeaker enclosures US Sound/Bose Corporation lightweight loudspeaker systems construction method)]</ref>
 # Other patents pending