US3041475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic polar relay
Assignee: General Dynamics Corp
•
Filing: 1958-03-13
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Granted: 1962-06-26
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Expires: 1978-03-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles R Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:51
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/601
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2866909A
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US2910688A
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US2894250A
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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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |