Patent US3098889A successfully refreshed from Google Patents.
US3098889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric tone generator
Assignee: Individual
•
Filing: 1960-11-14
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Granted: 1963-07-23
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Buitkus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:47
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03; G10H3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PHOTOELECTRIC TRANSDUCER COMPRISING, IN COMBINATION, A SUBSTANTIALLY DISC SHAPED PHOTOELECTRIC CELL HAVING A PHOTOSENSITIVE AREA ON EACH FACE, A PLURALITY OF ENDLESS CONCENTRIC OPTICAL SOUND TRACTS DEPICTED UPON SAID PHOTO
Claim 2
Dependent Claim
31 words
A PHOTOELECTRIC TRANSDUCER COMPRISING, IN COMBINATION, A SUBSTANTIALLY DISC SHAPED PHOTOELECTRIC CELL HAVING A PHOTOSENSITIVE AREA ON EACH FACE, A PLURALITY OF ENDLESS CONCENTRIC OPTICAL SOUND TRACTS DEPICTED UPON SAID PHOTO
References Cited (Backward Citations)
US888802A
Cited
US2014741A
Cited
US1986547A
Cited
US2142391A
Cited
US2494943A
Cited
US2513109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |