Patent US922541A successfully refreshed from Google Patents.
Patent US3467129A successfully refreshed from Google Patents.
US3467129A
Expired / Lapsed
US
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Hydraulically-operated valve
Assignee: Individual
•
Filing: 1966-03-29
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Granted: 1969-09-16
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Expires: 1986-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jean Louis Gratzmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:59
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/06; E21B34/00; E21B34/02; E21B34/04; E21B34/16; E21B43/00; E21B43/01; F16K31/124; F16K31/1245; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/402
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |