Patent US2773239A successfully refreshed from Google Patents.
US2773239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical indicating instruments
Assignee: —
•
Filing: —
•
Granted: 1956-12-04
•
Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:29
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/02; G01R5/08; Y; Y10; Y10S; Y10S310/00; Y10S310/06; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2427571A
Cited
US701937A
Cited
US835322A
Cited
US800873A
Cited
US1647474A
Cited
US1563731A
Cited
US2474988A
Cited
US2611010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |