US1405968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1919-12-11
•
Granted: 1922-02-07
•
Expires: 1939-12-11
Abstract
No abstract record available.
Inventors
- 👤 John H Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/103; Y; Y10; Y10S; Y10S137/00; Y10S137/906; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7919; Y10T137/7922; Y10T137/7929; Y10T137/7935
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) | 1925-02-06 | 1925-08-08 | 1926-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-02-06 | 1929-08-08 | 1930-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-02-06 | 1933-08-08 | 1934-02-07 | $7700.00 | Window Closed / Lapsed |