US2481216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure and heat-treating device
Assignee: Cook Electric Co
•
Filing: 1945-01-13
•
Granted: 1949-09-06
•
Expires: 1965-01-13
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hasselhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:52
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B27; B27D; B27D3/00; B29C65/00; B29C65/02; B29C66/50; B29C66/51; B29C66/54; B29C66/543; B29C66/545; B29C66/83; B29C66/832; B29C66/8322; B30; B30B; B30B1/00; B30B1/005; B29C65/10; B29C65/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US906700A
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GB345976A
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US1887550A
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US1961044A
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US2202042A
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US2312332A
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US2363933A
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US2307985A
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US2358483A
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US2435866A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |