US1865575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing integral finned tubing
Assignee: WOLVERINE TUBE Co
•
Filing: 1928-11-30
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Granted: 1932-07-05
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Expires: 1948-11-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Locke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:04
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/207; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1902
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) | 1935-07-05 | 1936-01-04 | 1936-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-05 | 1940-01-04 | 1940-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-05 | 1944-01-04 | 1944-07-05 | $7700.00 | Window Closed / Lapsed |