Patent US1464745A successfully refreshed from Google Patents.
US1464745A
Expired / Lapsed
US
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Tank-valve mechanism
Assignee: Enterprise Railway Equipment Co
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Filing: 1921-04-06
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Granted: 1923-08-14
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Expires: 1941-04-06
Abstract
No abstract record available.
Inventors
- 👤 Campbell Argyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/06; F16K27/062; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7062; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/554; Y10T70/5562; Y10T70/5566
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) | 1926-08-13 | 1927-02-12 | 1927-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-08-13 | 1931-02-12 | 1931-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-08-13 | 1935-02-12 | 1935-08-14 | $7700.00 | Window Closed / Lapsed |