US2694764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc welding
Assignee: Airco Inc
•
Filing: 1952-05-17
•
Granted: 1954-11-16
•
Expires: 1972-05-17
Abstract
No abstract record available.
Inventors
- 👤 Muller Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:33
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1501266A
Cited
US1977278A
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US2053417A
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US2473601A
Cited
US2515559A
Cited
US2504868A
Cited
US2510205A
Cited
US2544711A
Cited
US2540811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |