US3179749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone instrument controlling device
Assignee: Individual
•
Filing: 1960-03-03
•
Granted: 1965-04-20
•
Expires: 1980-03-03
Abstract
No abstract record available.
Inventors
- 👤 Milton L Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/62; H04M1/02; H04M1/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
IN A TELEPHONIC INSTRUMENT, INCLUDING RECEIVER AND TRANSMITTER SECTIONS, SAID INSTRUMENT HAVING SOUND-AMPLIFYING MEANS ASSOCIATED THEREWITH, INCLUDING AN ELECTRONIC AMPLIFYING UNIT, AN INDUCTION ELEMENT, AND A LOUDSPEAKER, SAID AMPLIFYING UNIT CONNECTED TO A SOURCE OF ELECTRIC POWER, AND SAID INDUCTION ELEMENT DISPOSED ADJACENT SAID RECEIVER SECTION, MEANS FOR INHIBITING INDUCED NON-VOCAL SOUNDS THROUGH SAID LOUDSPEAKER COMPRISING A FILM OF NON-MAGNETIC METAL HELD ON SAID TRANSMITTING SECTION IN CLOSE PROXIMITY TO THE SOUND-RECEIVING FACE THEREOF.
References Cited (Backward Citations)
GB343625A
Cited
US2507375A
Cited
US2702836A
Cited
US2852627A
Cited
US2901553A
Cited
FR1132430A
Cited
US2997544A
Cited
US2961498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |