US2645703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inert gas-shielded arc welding apparatus
Assignee: Advance Transformer Co
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Filing: 1951-03-08
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Granted: 1953-07-14
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robert E Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/167; B23K9/1675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1576160A
Cited
US1552248A
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US2172080A
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US2344534A
Cited
US2219493A
Cited
US2547872A
Cited
US2544711A
Cited
US2510207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |