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CA619985A - Sound control for telephone ringer - Google Patents

Sound control for telephone ringer

Info

Publication number
CA619985A
CA619985A CA619985A CA619985DA CA619985A CA 619985 A CA619985 A CA 619985A CA 619985 A CA619985 A CA 619985A CA 619985D A CA619985D A CA 619985DA CA 619985 A CA619985 A CA 619985A
Authority
CA
Canada
Prior art keywords
sound control
telephone ringer
ringer
telephone
sound
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
CA619985A
Inventor
E. Spitler Robert
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA619985A publication Critical patent/CA619985A/en
Expired legal-status Critical Current

Links

CA619985A Sound control for telephone ringer Expired CA619985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA619985T

Publications (1)

Publication Number Publication Date
CA619985A true CA619985A (en) 1961-05-09

Family

ID=35862267

Family Applications (1)

Application Number Title Priority Date Filing Date
CA619985A Expired CA619985A (en) Sound control for telephone ringer

Country Status (1)

Country Link
CA (1) CA619985A (en)

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