US2929913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable welding tool
Assignee: AT&T Inc
•
Filing: 1956-09-12
•
Granted: 1960-03-22
•
Expires: 1976-09-12
Abstract
No abstract record available.
Inventors
- 👤 Victor F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2145274A
Cited
US2296317A
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US2459847A
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US2442423A
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US2679571A
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US2737564A
Cited
US2878362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |