US2541370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated switch
Assignee: Philips North America LLC
•
Filing: 1947-08-07
•
Granted: 1951-02-13
•
Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 John C Koonz
- 👤 Chester L Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:24
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; H01H35/2657; H01H35/2664; H01H35/2678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1960020A
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US2033417A
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US2246581A
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US2295456A
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US2405142A
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US2428096A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |