US2965744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for producing a finned tube
Assignee: Individual
•
Filing: 1958-02-27
•
Granted: 1960-12-20
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Busse Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:26
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/08; B23K11/082; B23K11/084; 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)
US1172301A
Cited
US1972230A
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US2070539A
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US2174928A
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US2449840A
Cited
US2376762A
Cited
US2344790A
Cited
US2550965A
Cited
US2826672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |