US1853702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow operated valve
Assignee: Individual
•
Filing: 1930-07-03
•
Granted: 1932-04-12
•
Expires: 1950-07-03
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Friedrich Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:03
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2035; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2511; Y10T137/7722; Y10T137/7781; Y10T137/7832; Y10T137/8593; Y10T137/87153; Y10T137/87161
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) | 1935-04-12 | 1935-10-12 | 1936-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-12 | 1939-10-12 | 1940-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-12 | 1943-10-12 | 1944-04-12 | $7700.00 | Window Closed / Lapsed |