US2897342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc welding apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1955-12-29
•
Granted: 1959-07-28
•
Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Harry J Bichsel
- 👤 Alfred J Baeslack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:23
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/124; B23K9/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731934A
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US1508710A
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US1508689A
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US1549450A
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US2364920A
Cited
US2518222A
Cited
US2504868A
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US2510207A
Cited
US2776361A
Cited
US2806127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |