US3213888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic metering valves
Assignee: Preferred Utilities Manufacturing Corp
•
Filing: 1963-04-01
•
Granted: 1965-10-26
•
Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Angus E Cameron
- 👤 Llewellin W Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:58
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/10; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F16K5/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87121; Y10T137/87129; Y10T137/87137; Y10T137/87917; Y10T137/88022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US731271A
Cited
US1362538A
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US1479802A
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US2237784A
Cited
US2433732A
Cited
US2708096A
Cited
DE929407C
Cited
GB780191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |