CA697869A - Sound amplification using foam thermoplastics - Google Patents

Sound amplification using foam thermoplastics

Info

Publication number
CA697869A
CA697869A CA697869A CA697869DA CA697869A CA 697869 A CA697869 A CA 697869A CA 697869 A CA697869 A CA 697869A CA 697869D A CA697869D A CA 697869DA CA 697869 A CA697869 A CA 697869A
Authority
CA
Canada
Prior art keywords
sound amplification
thermoplastics
foam
foam thermoplastics
amplification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA697869A
Inventor
B. Smolarczyk Frank
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA697869A publication Critical patent/CA697869A/en
Expired legal-status Critical Current

Links

CA697869A Sound amplification using foam thermoplastics Expired CA697869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA697869T

Publications (1)

Publication Number Publication Date
CA697869A true CA697869A (en) 1964-11-17

Family

ID=36008134

Family Applications (1)

Application Number Title Priority Date Filing Date
CA697869A Expired CA697869A (en) Sound amplification using foam thermoplastics

Country Status (1)

Country Link
CA (1) CA697869A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720285A (en) * 1970-06-30 1973-03-13 Rand Org Ltd Loudspeakers
US3982607A (en) * 1975-01-28 1976-09-28 Evans Arnold D Loudspeaker cabinet having an integrally constructed horn
US4130174A (en) * 1977-05-25 1978-12-19 Audioanalyst, Inc. Loudspeaker
US4167985A (en) * 1976-05-13 1979-09-18 Dunlavy John H Speaker system
US4185534A (en) * 1977-06-20 1980-01-29 Les Cove Stringed musical instruments with foamed solid bodies
US4290336A (en) * 1979-03-28 1981-09-22 Peavey Hartley D Molded guitar structure and method of making same
US4313362A (en) * 1980-01-22 1982-02-02 Lieber Thomas G Guitar construction
US4369857A (en) * 1981-01-22 1983-01-25 The Kind Horn Company Loudspeaker and horn combination

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720285A (en) * 1970-06-30 1973-03-13 Rand Org Ltd Loudspeakers
US3982607A (en) * 1975-01-28 1976-09-28 Evans Arnold D Loudspeaker cabinet having an integrally constructed horn
US4167985A (en) * 1976-05-13 1979-09-18 Dunlavy John H Speaker system
US4130174A (en) * 1977-05-25 1978-12-19 Audioanalyst, Inc. Loudspeaker
US4185534A (en) * 1977-06-20 1980-01-29 Les Cove Stringed musical instruments with foamed solid bodies
US4290336A (en) * 1979-03-28 1981-09-22 Peavey Hartley D Molded guitar structure and method of making same
US4313362A (en) * 1980-01-22 1982-02-02 Lieber Thomas G Guitar construction
US4369857A (en) * 1981-01-22 1983-01-25 The Kind Horn Company Loudspeaker and horn combination

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