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Patent US2808484A successfully refreshed from Google Patents.
US2808484A
Expired / Lapsed
US
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Pressure operated switch
Assignee: Manning Maxwell and Moore Inc
•
Filing: 1952-05-21
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Granted: 1957-10-01
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Expires: 1972-05-21
Abstract
No abstract record available.
Inventors
- 👤 Beck Rudolf
- 👤 Joseph F Engelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:51
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; H01H35/2635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1843256A
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US2170341A
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US2289549A
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US2404843A
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US2428096A
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US2499040A
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US2442456A
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US2485074A
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US2620413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |