US2633510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch
Assignee: Hetherington Inc
•
Filing: 1951-09-13
•
Granted: 1953-03-31
•
Expires: 1971-09-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Schellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:17
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/12; H01H23/16; H01H13/00; H01H13/50; H01H13/56; H01H13/60; H01H23/04; H01H23/06; H01H23/065; H01H5/00; H01H5/04; H01H5/045; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US610402A
Cited
US1264529A
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US1810314A
Cited
US1817807A
Cited
US1812410A
Cited
US2389592A
Cited
US2436958A
Cited
US2584883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |