US2934981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making seamed tubing
Assignee: CLIFTON CONDUIT Corp
•
Filing: 1956-05-29
•
Granted: 1960-05-03
•
Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 William S Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:38
CPC Classifications
B; B23; B23K; B23K31/00; B23K31/02; B23K31/027; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/0807; B21C37/0811; B23D; B23D79/00; B23D79/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |