CA909148A - Sound attenuating earcups - Google Patents

Sound attenuating earcups

Info

Publication number
CA909148A
CA909148A CA909148A CA909148DA CA909148A CA 909148 A CA909148 A CA 909148A CA 909148 A CA909148 A CA 909148A CA 909148D A CA909148D A CA 909148DA CA 909148 A CA909148 A CA 909148A
Authority
CA
Canada
Prior art keywords
sound attenuating
earcups
attenuating earcups
sound
attenuating
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
CA909148A
Inventor
A. Aileo Jackson
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.)
Gentex Corp
Original Assignee
Gentex Corp
Publication date
Application granted granted Critical
Publication of CA909148A publication Critical patent/CA909148A/en
Expired legal-status Critical Current

Links

CA909148A Sound attenuating earcups Expired CA909148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA909148T

Publications (1)

Publication Number Publication Date
CA909148A true CA909148A (en) 1972-09-05

Family

ID=36416814

Family Applications (1)

Application Number Title Priority Date Filing Date
CA909148A Expired CA909148A (en) Sound attenuating earcups

Country Status (1)

Country Link
CA (1) CA909148A (en)

Similar Documents

Publication Publication Date Title
CA1011259A (en) Sound attenuating walls
CA989972A (en) Electroacoustic transducer
AU5415873A (en) Acoustic transducer
CA986027A (en) Speaker enclosure
CA965016A (en) Sound absorbing and attenuating structure
CA963570A (en) Electroacoustic transducer
CA977865A (en) Acoustic energy transmission device
CA984301A (en) Surround sound systems
CA948304A (en) Acoustical transducers
AU471258B2 (en) Sound record
CA977286A (en) Acoustical speaker mounting means
AU461117B2 (en) Electroacoustic transducer
CA989719A (en) Method of making sound attenuating laminates
CA909148A (en) Sound attenuating earcups
CA976437A (en) Silencer
CA887236A (en) Sound attenuating earcups
AU454610B2 (en) Improved sound attenuating unit
CA909684A (en) Ear defenders
CA869060A (en) Sound attenuating units
CA897577A (en) Acoustical structure
CA985640A (en) Surround sound systems
AU454882B2 (en) Improved sound attenuating material
CA882984A (en) Means for sound suppression
CA892792A (en) Acoustic equipment
CA903878A (en) Acoustic transducer