Patent US2581734A successfully refreshed from Google Patents.
US2581734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument case and cover
Assignee: Triplett Electrical Instrument Co
•
Filing: 1950-01-11
•
Granted: 1952-01-08
•
Expires: 1970-01-11
Abstract
No abstract record available.
Inventors
- 👤 William R Triplett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02; H; H05; H05K; H05K5/00; H05K5/02; H05K5/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1226810A
Cited
US1838962A
Cited
US1911099A
Cited
US2099958A
Cited
US2166003A
Cited
US2222911A
Cited
US2206437A
Cited
US2320946A
Cited
US2346495A
Cited
US2402360A
Cited
US2379861A
Cited
US2540583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |