US2811867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: Oak Manufacturing Co
•
Filing: 1953-07-13
•
Granted: 1957-11-05
•
Expires: 1973-07-13
Abstract
No abstract record available.
Inventors
- 👤 George F Hogberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:31
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/08; H01H3/10; H01H19/00; H01H19/02; H01H19/10; H01H19/14; H01H2003/105; H01H2019/143; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1101692A
Cited
US1297999A
Cited
US1838216A
Cited
US2220599A
Cited
US2366721A
Cited
US2437785A
Cited
US2680971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |