US1685131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank-car coil heater
Assignee: ACF Industries Inc
•
Filing: 1927-05-06
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Granted: 1928-09-25
•
Expires: 1947-05-06
Abstract
No abstract record available.
Inventors
- 👤 Charles I Hummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:22
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/74; B65D88/744; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/101; Y10S165/104; Y10S165/106; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
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) | 1931-09-25 | 1932-03-26 | 1932-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-25 | 1936-03-26 | 1936-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-25 | 1940-03-26 | 1940-09-25 | $7700.00 | Window Closed / Lapsed |