Patent US3240943A successfully refreshed from Google Patents.
US3240943A
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US
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Photosensitive solid state relay
Assignee: Hoffman Electronics Corp
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Filing: 1961-05-19
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Granted: 1966-03-15
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 Richard L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:04
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; Y; Y10; Y10S; Y10S136/00; Y10S136/291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233879A
Cited
US2308095A
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US2482980A
Cited
US2740901A
Cited
US2949498A
Cited
US2901669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |