US2716692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for producing welded seam tubing
Assignee: TRENT TUBE Co
•
Filing: 1954-02-16
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Granted: 1955-08-30
•
Expires: 1974-02-16
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Williams
- 👤 Howard J Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:45
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1435751A
Cited
US1917210A
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US2644070A
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US2654014A
Cited
US2659966A
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US2669639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |