US2484959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric welding apparatus
Assignee: Individual
•
Filing: 1945-01-30
•
Granted: 1949-10-18
•
Expires: 1965-01-30
Abstract
No abstract record available.
Inventors
- 👤 Redekopp Calvin Waldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1367845A
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US818361A
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US1664022A
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US1754353A
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US1948377A
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US2043331A
Cited
US2117035A
Cited
GB461639A
Cited
US2425183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |