US2980875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermo-responsive device
Assignee: King Seeley Corp
•
Filing: 1956-08-20
•
Granted: 1961-04-18
•
Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Emil E Sivacek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:56
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; G; G01; G01K; G01K13/00; G01K7/00; G01K7/16; G01K7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1112788A
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US1218205A
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US1663810A
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US2207871A
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US2399423A
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US2430196A
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US2492404A
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US2584717A
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US2484585A
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US2699487A
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US2769074A
Cited
US2779846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |