Patent US2666912A successfully refreshed from Google Patents.
US2666912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical counter
Assignee: California Institute Research Foundation
•
Filing: 1950-05-16
•
Granted: 1954-01-19
•
Expires: 1970-05-16
Abstract
No abstract record available.
Inventors
- 👤 Kenneth P Gow
- 👤 Arthur L Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:13
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2098227A
Cited
US2192421A
Cited
US2207743A
Cited
US2216069A
Cited
US2502837A
Cited
US2568348A
Cited
US2630562A
Cited
US2496585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |