Patent US3066390A successfully refreshed from Google Patents.
US3066390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding of metal sheets
Assignee: Alcan Research and Development Ltd
•
Filing: 1958-12-22
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Granted: 1962-12-04
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Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Stanton E Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:42
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21D53/045; B21C; B21C37/00; B21C37/06; B21C37/14; B23; B23K; B23K35/00; B23K35/22; B23K35/224; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49369; Y10T29/49371; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
IN A METHOD OF MAKING HOLLOW ALUMINUM SHEET METAL FABRICATIONS WHICH COMPRISES ROLLING TOGETHER A PAIR OF ALUMINUM METAL SHEETS FOR MUTUALLY WELDING SAID SHEETS
Claim 2
Dependent Claim
25 words
IN A METHOD OF MAKING HOLLOW ALUMINUM SHEET METAL FABRICATIONS WHICH COMPRISES ROLLING TOGETHER A PAIR OF ALUMINUM METAL SHEETS FOR MUTUALLY WELDING SAID SHEETS
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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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |