US2928950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Point-contact semiconductor photocell
Assignee: Raytheon Co
•
Filing: 1955-04-05
•
Granted: 1960-03-15
•
Expires: 1975-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jon H Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:50
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F10/11; H10F99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2504628A
Cited
US2694168A
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US2586609A
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US2640901A
Cited
US2677106A
Cited
US2691736A
Cited
US2733390A
Cited
US2818536A
Cited
US2735919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |