US2023738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for assembling and securing radiating fins on tubes
Assignee: BUSH Manufacturing Co
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Filing: 1931-01-30
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Granted: 1935-12-10
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Expires: 1951-01-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Mason
- 👤 William L Tancred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:51
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/53; Y10T29/53113; Y10T29/53122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-12-09 | 1939-06-10 | 1939-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-09 | 1943-06-10 | 1943-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-09 | 1947-06-10 | 1947-12-10 | $7700.00 | Window Closed / Lapsed |