US2673468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Limit switch operating mechanism
Assignee: Westinghouse Electric Corp
•
Filing: 1951-07-28
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Granted: 1954-03-30
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Expires: 1971-07-28
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Immel
- 👤 Pierce Lawrence
- 👤 Jr Stanley Kmonk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:51
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/02; H01H21/18; H01H21/22; H01H21/24; H01H21/28; H01H21/285; H01H3/00; H01H3/32; H01H3/46; H01H2003/463; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1680428A
Cited
US1493559A
Cited
US1676155A
Cited
US1973800A
Cited
US2040663A
Cited
US2121626A
Cited
US2218837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |