US2469897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for resistance welding of aluminum
Assignee: PEERLESS WIRE GOODS CO Inc
•
Filing: 1948-11-10
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Granted: 1949-05-10
•
Expires: 1968-11-10
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Schilling
- 👤 Ardrey M Bramblett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:51
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/18
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |