US2678774A
Expired / Lapsed
US
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Thermomagnetic control device
Assignee: Milwaukee Gas Specialty Co
•
Filing: 1950-10-18
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Granted: 1954-05-18
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Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Martin J Arvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/107; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2035; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2390985A
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US1523351A
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US1922720A
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US1977656A
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US2114446A
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US2303702A
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US2339087A
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US2299155A
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US2584458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |