US2834851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: Oak Manufacturing Co
•
Filing: 1956-05-07
•
Granted: 1958-05-13
•
Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Edward J Mastney
- 👤 Ludwig J Fichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:07
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/26; H03J5/28; H01; H01H; H01H19/00; H01H19/54; H01H19/56; H01H19/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2132277A
Cited
US2433389A
Cited
US2558888A
Cited
GB643366A
Cited
US2577225A
Cited
US2594190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |