US2552029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold treating machine
Assignee: Union Carbide Corp
•
Filing: 1946-04-10
•
Granted: 1951-05-08
•
Expires: 1966-04-10
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bludeau
- 👤 James H Bucknam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:59
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/11; C; C21; C21D; C21D1/00; C21D1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1369440A
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US1507366A
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US1654966A
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US1689256A
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GB189915754A
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US2021971A
Cited
US1940164A
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US1940192A
Cited
US2059970A
Cited
US2487821A
Cited
US2445294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |