US2832000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electric arc welding
Assignee: Airco Inc
•
Filing: 1954-10-08
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Granted: 1958-04-22
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Expires: 1974-10-08
Abstract
No abstract record available.
Inventors
- 👤 Richard B Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:40
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/06; B23K9/073; B23K9/0735
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2008411A
Cited
US2276644A
Cited
US2460990A
Cited
US2500341A
Cited
US2529111A
Cited
US2527893A
Cited
US2691715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |