US2537040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording camera
Assignee: Fairchild Semiconductor Corp
•
Filing: 1946-03-23
•
Granted: 1951-01-09
•
Expires: 1966-03-23
Abstract
No abstract record available.
Inventors
- 👤 Irving W Doyle
- 👤 William G Herbstreit
- 👤 Erwin C Weiblen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:41
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2400778A
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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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |