US2987653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal comparing device
Assignee: Bendix Corp
•
Filing: 1957-10-14
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Granted: 1961-06-06
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Expires: 1977-10-14
Abstract
No abstract record available.
Inventors
- 👤 Prapis Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:50
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; G; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/025; G05D; G05D1/00; G05D1/0055; G05D1/0066; G05D3/00; G05D3/12; G05D3/14; G05D3/1418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2149092A
Cited
US2584856A
Cited
US2649557A
Cited
US2819442A
Cited
US2774932A
Cited
US2849662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |