US1474790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Train-pipe end valve
Assignee: Vapor Car Heating Co Inc
•
Filing: 1921-08-13
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Granted: 1923-11-20
•
Expires: 1941-08-13
Abstract
No abstract record available.
Inventors
- 👤 Edward A Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:34
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/04; B60T17/046; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944
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) | 1926-11-19 | 1927-05-21 | 1927-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-11-19 | 1931-05-21 | 1931-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-11-19 | 1935-05-21 | 1935-11-20 | $7700.00 | Window Closed / Lapsed |