US2686034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot controlled diaphragm valve
Assignee: Individual
•
Filing: 1948-10-28
•
Granted: 1954-08-10
•
Expires: 1968-10-28
Abstract
No abstract record available.
Inventors
- 👤 Rabal Alfredo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/06; F16K21/12; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408687A
Cited
US453997A
Cited
US595061A
Cited
US925538A
Cited
US917443A
Cited
US2338760A
Cited
US2461615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |