Patent US2902600A successfully refreshed from Google Patents.
US2902600A
Expired / Lapsed
US
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Voltage monitor circuit
Assignee: Research Corp
•
Filing: 1955-08-26
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Granted: 1959-09-01
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Expires: 1975-08-26
Abstract
No abstract record available.
Inventors
- 👤 Stewart T Coffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:09
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2636985A
Cited
US2540539A
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US2545924A
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US2644887A
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US2683806A
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US2819396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |