Patent US2617042A successfully refreshed from Google Patents.
US2617042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coincidence circuit
Assignee: Individual
•
Filing: 1951-04-05
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Granted: 1952-11-04
•
Expires: 1971-04-05
Abstract
No abstract record available.
Inventors
- 👤 Louis F Wouters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
H; H03; H03K; H03K21/00; H03K21/02; H03K19/00; H03K19/02; H03K19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1977999A
Cited
US2144337A
Cited
US2550106A
Cited
US2527512A
Cited
US2540016A
Cited
US2517404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |