US2902589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance welding
Assignee: Fairchild Engine and Airplane Corp
•
Filing: 1954-12-14
•
Granted: 1959-09-01
•
Expires: 1974-12-14
Abstract
No abstract record available.
Inventors
- 👤 Elmer R Wirta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/0093; A; A47; A47J; A47J37/00; A47J37/12; A47J37/1257; A47J37/1261; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2327265A
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US2445801A
Cited
US2430083A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |