US2763779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control-circuit arrangement
Assignee: Individual
•
Filing: 1951-03-12
•
Granted: 1956-09-18
•
Expires: 1971-03-12
Abstract
No abstract record available.
Inventors
- 👤 Groot Folkert Albert De
- 👤 Schenan Bernardus Willem Ingen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:05
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371285A
Cited
US2255746A
Cited
US2315043A
Cited
US2330499A
Cited
US2278429A
Cited
FR904095A
Cited
US2382436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |