Patent US3028500A successfully refreshed from Google Patents.
US3028500A
Expired / Lapsed
US
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Photoelectric apparatus
Assignee: RCA Corp
•
Filing: 1956-08-24
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Granted: 1962-04-03
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Wallmark John Torkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F10/14; H10F99/00; F; F42; F42B; F42B15/00; F42B15/01; H10F30/00; H10F30/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2863056A
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US2800617A
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US2889499A
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US2846592A
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US2779877A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |