Patent US3820525A successfully refreshed from Google Patents.
US2945296A
Expired / Lapsed
US
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Method of affixing fins to tubing
Assignee: Marley Co LLC
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Filing: 1956-02-13
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Granted: 1960-07-19
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Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 Dougan L Jones
- 👤 Langewis Cornelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:34
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/002; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49382
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2661525A
Cited
US2872730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |