US3474251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell amplifier
Assignee: General Electric Co
•
Filing: 1966-06-30
•
Granted: 1969-10-21
•
Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Richard E Milford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:52
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10851; H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2559515A
Cited
US2632855A
Cited
US3208001A
Cited
US3361896A
Cited
US3254306A
Cited
US3333106A
Cited
US3330973A
Cited
US3376423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |