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US2800922A
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Hydraulic valve
Assignee: Individual
•
Filing: 1955-02-15
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Granted: 1957-07-30
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Expires: 1975-02-15
Abstract
No abstract record available.
Inventors
- 👤 Lynn L Charlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:04
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/31; F15B2211/3105; F15B2211/3116; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/329; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/52; F15B2211/528; F15B2211/575; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US617812A
Cited
US2225082A
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US2448557A
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US2620820A
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US2572705A
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US2689585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |