US2534124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating bellows
Assignee: Cook Electric Co
•
Filing: 1945-03-22
•
Granted: 1950-12-12
•
Expires: 1965-03-22
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hasselhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:14
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/205; C; C21; C21D; C21D9/00; C21D9/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1836634A
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US2154273A
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US2232176A
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US2243522A
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US2117106A
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US2199423A
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US2296435A
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US2323985A
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US2402204A
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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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |