Patent US1782316A successfully refreshed from Google Patents.
US1782316A
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US
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Method of welding
Assignee: National Tube Co
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Filing: 1929-05-10
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Granted: 1930-11-18
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Expires: 1949-05-10
Abstract
No abstract record available.
Inventors
- 👤 Boris S Robinoff
- 👤 Sumner E Paine
- 👤 Wrignol E Quillen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/035; B23K9/06; B23K9/073; B23K9/0737
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-11-17 | 1934-05-19 | 1934-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-11-17 | 1938-05-19 | 1938-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-11-17 | 1942-05-19 | 1942-11-18 | $7700.00 | Window Closed / Lapsed |