Patent US2806127A successfully refreshed from Google Patents.
US2806127A
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US
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Electric arc welding
Assignee: Union Carbide Corp
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Filing: 1954-10-29
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Granted: 1957-09-10
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Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hackman
- 👤 Roscoe R Lobosco
- 👤 Helmbrecht Wilbur Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:21
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/06; B23K9/067; B23K9/0671
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898060A
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US1701372A
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US1976551A
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US2311462A
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US2364920A
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US2371894A
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US2430055A
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US2444834A
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US2397182A
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US2460990A
Cited
US2680181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |