US2873356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc welding power supply
Assignee: Individual
•
Filing: 1955-10-17
•
Granted: 1959-02-10
•
Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 John E Carroll
- 👤 John G Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:20
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248; B23K9/00; B23K9/10; B23K9/1006; B23K9/1012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1723584A
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US1959513A
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US1924906A
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US2068883A
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US1994953A
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US2171512A
Cited
US2077114A
Cited
US2305380A
Cited
US2357418A
Cited
US2597689A
Cited
US2757296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |