US2464935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical welding control system
Assignee: Individual
•
Filing: 1945-02-08
•
Granted: 1949-03-22
•
Expires: 1965-02-08
Abstract
No abstract record available.
Inventors
- 👤 Chester F Leathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:39
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1791156A
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US1852799A
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US2038195A
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US2114827A
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US2165174A
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US2200376A
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US2166788A
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US2295293A
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US2358681A
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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) | 1952-03-21 | 1952-09-20 | 1953-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-21 | 1956-09-20 | 1957-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-21 | 1960-09-20 | 1961-03-22 | $7700.00 | Window Closed / Lapsed |