US2807686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control switch
Assignee: Individual
•
Filing: 1955-01-03
•
Granted: 1957-09-24
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert B Clendenin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:13
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34; H01H5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US975420A
Cited
US2182450A
Cited
US2307731A
Cited
US2300530A
Cited
US2445756A
Cited
US2718565A
Cited
US2692922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |