Patent US3342420A successfully refreshed from Google Patents.
US3342420A
Expired / Lapsed
US
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Flow control valve
Assignee: W R AMES CO
•
Filing: 1965-02-09
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Granted: 1967-09-19
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Expires: 1985-02-09
Abstract
No abstract record available.
Inventors
- 👤 Robert F Roulet
- 👤 Willis A Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:52
CPC Classifications
F; F16; F16K; F16K3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US609578A
Cited
US721821A
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US1154833A
Cited
CH135173A
Cited
US2060943A
Cited
US2499738A
Cited
US2771904A
Cited
US2925244A
Cited
US3212719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |