Patent US2800536A successfully refreshed from Google Patents.
US2800536A
Expired / Lapsed
US
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Timing switch
Assignee: Individual
•
Filing: 1954-01-08
•
Granted: 1957-07-23
•
Expires: 1974-01-08
Abstract
No abstract record available.
Inventors
- 👤 Edward B Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:32
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/60; H01H19/62; H01H43/00; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB106029A
Cited
US1281204A
Cited
US2107470A
Cited
US2033477A
Cited
US2074322A
Cited
US2677023A
Cited
US2611837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |