US2815642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for utilizing the thermal expansion of wax
Assignee: Individual
•
Filing: 1955-10-21
•
Granted: 1957-12-10
•
Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 John F Sherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/32; G01K5/44; F; F03; F03G; F03G7/00; F03G7/06; F03G7/061; F03G7/06112; F03G7/06113; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US861310A
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US1300717A
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US1865105A
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US1950993A
Cited
US2111687A
Cited
US2215157A
Cited
US2368181A
Cited
US2489896A
Cited
US2572386A
Cited
US2512212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |