Patent US3208720A successfully refreshed from Google Patents.
US3208720A
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US
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Reciprocating valve
Assignee: Ross Operating Valve Co
•
Filing: 1962-05-24
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Granted: 1965-09-28
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Huntington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:23
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K41/04; F16K1/00; F16K1/32; F16K1/34; F16K1/46; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/8667; Y10T137/86686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |