Patent US2502012A successfully refreshed from Google Patents.
US2502012A
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US
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Apparatus and method for continuous manufacture of seamed tubing
Assignee: W R AMES CO
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Filing: 1947-05-26
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Granted: 1950-03-28
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Expires: 1967-05-26
Abstract
No abstract record available.
Inventors
- 👤 Kinkead Aian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:20
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US146868A
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US545953A
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DE482558C
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US1945594A
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US1966349A
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US2098989A
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US2257823A
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US2350410A
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US2329938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |