US2976357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television slide projector
Assignee: Individual
•
Filing: 1957-01-22
•
Granted: 1961-03-21
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hammett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:41
CPC Classifications
H; H04; H04N; H04N3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2193869A
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US2314920A
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US2301375A
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US2344662A
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US2435840A
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US2415450A
Cited
US2624798A
Cited
US2707666A
Cited
US2764697A
Cited
US2753395A
Cited
US2750444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |