Patent US2671173A successfully refreshed from Google Patents.
US2671173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock excited oscillator circuit
Assignee: Individual
•
Filing: 1945-08-28
•
Granted: 1954-03-02
•
Expires: 1965-08-28
Abstract
No abstract record available.
Inventors
- 👤 George R Gamertsfelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:34
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2189402A
Cited
US2273193A
Cited
US2386844A
Cited
US2442770A
Cited
US2403725A
Cited
US2443619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |