US2815083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perambulatory arc welder
Assignee: Individual
•
Filing: 1955-07-05
•
Granted: 1957-12-03
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 William H Ellingsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1527431A
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US1585351A
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US1966245A
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US2244063A
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US2399605A
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US2395323A
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US2478327A
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US2513718A
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US2645297A
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US2706008A
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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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |