US2521044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for annealing
Assignee: Crown Cork and Seal Co Inc
•
Filing: 1943-08-05
•
Granted: 1950-09-05
•
Expires: 1963-08-05
Abstract
No abstract record available.
Inventors
- 👤 William B Cooper
- 👤 Edward J Seabold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:34
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1633121A
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US1765955A
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US1890065A
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US1811522A
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US1930837A
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US1953118A
Cited
US1991339A
Cited
US2009856A
Cited
US2188176A
Cited
US2181738A
Cited
US2218354A
Cited
US2278136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |