Patent US3975775A successfully refreshed from Google Patents.
US2900879A
Expired / Lapsed
US
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Manufacture of seam-welded tubing
Assignee: Tube Products Ltd
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Filing: 1955-08-10
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Granted: 1959-08-25
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Expires: 1975-08-10
Abstract
No abstract record available.
Inventors
- 👤 Norton Albert
- 👤 Harry O Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:42
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/0807; B21C37/0811; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/501476; Y10T409/50164; Y10T409/501804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |