US2844673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically actuated switch and compressor unloader
Assignee: Siemens Energy and Automation Inc
•
Filing: 1953-08-31
•
Granted: 1958-07-22
•
Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 Paul F White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:54
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H50/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US917897A
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US1416092A
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US1387679A
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US1577730A
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US1674984A
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US1659290A
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US1813914A
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US2576578A
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US2443286A
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US2655306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |