US2650507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential resistor
Assignee: Individual
•
Filing: 1952-08-07
•
Granted: 1953-09-01
•
Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 De Witt C Clintsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:48
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/27; F16H48/06; F16H48/08; F16H2048/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1178093A
Cited
US1479752A
Cited
US1659833A
Cited
US1916715A
Cited
US2375938A
Cited
US2627190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |