US1800066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic valve
Assignee: Individual
•
Filing: 1929-07-01
•
Granted: 1931-04-07
•
Expires: 1949-07-01
Abstract
No abstract record available.
Inventors
- 👤 Edward J Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:06
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/145; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7879; Y10T137/7888; Y10T137/7889; Y10T137/794; Y10T137/8085
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) | 1934-04-06 | 1934-10-06 | 1935-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-06 | 1938-10-06 | 1939-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-06 | 1942-10-06 | 1943-04-07 | $7700.00 | Window Closed / Lapsed |