Patent US3219757A successfully refreshed from Google Patents.
US3219757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reproduction from monaural information
Assignee: General Electric Co
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Filing: 1962-08-06
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Granted: 1965-11-23
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Michael J Palladino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:33
CPC Classifications
H; H04; H04S; H04S5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
APPARATUS FOR ENHANCING THE REALISM OF SOUND PRODUCED FROM MONAURAL INFORMATION COMPRISING A FIRST LOUDSPEAKER, A SECOND LOUDSPEAKER, SAID FIRST AND SECOND LOUDSPEAKES BEING RELATIVELY SPACED SO THAT THE SECONDS EMANATED THEREFROM APPEAR TO COME FROM SPACED POINTS, MEANS FOR ENERGIZING SAID FIRST SPEAKER WITH SIGNALS
Claim 2
Dependent Claim
46 words
APPARATUS FOR ENHANCING THE REALISM OF SOUND PRODUCED FROM MONAURAL INFORMATION COMPRISING A FIRST LOUDSPEAKER, A SECOND LOUDSPEAKER, SAID FIRST AND SECOND LOUDSPEAKES BEING RELATIVELY SPACED SO THAT THE SECONDS EMANATED THEREFROM APPEAR TO COME FROM SPACED POINTS, MEANS FOR ENERGIZING SAID FIRST SPEAKER WITH SIGNALS
References Cited (Backward Citations)
US2942070A
Cited
US2852604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |