US2937512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of apparatus operating at high and low temperatures
Assignee: Frick Co Inc
•
Filing: 1956-04-17
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Granted: 1960-05-24
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Etter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:12
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/02; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; F25B41/00; F25D; F25D31/00; F25D31/005; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00065; B01J2219/00074; B01J2219/00076; B01J2219/00083; B01J2219/00162; B01J2219/00164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB356336A
Cited
US1909823A
Cited
US2244312A
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US2518299A
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US2523451A
Cited
US2530440A
Cited
US2589859A
Cited
US2546723A
Cited
US2764880A
Cited
US2655794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |