US2807074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of brazed finned tubing and the like
Assignee: Griscom Russell Co
•
Filing: 1955-09-27
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Granted: 1957-09-24
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Expires: 1975-09-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:55
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; B23; B23K; B23K1/00; B23K1/0008; B23K1/0012; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1256599A
Cited
US1412656A
Cited
US2092018A
Cited
US2164737A
Cited
US2314902A
Cited
US2440698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |