US3482816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction shear seal valve
Assignee: VALCOR ENG CORP
•
Filing: 1968-02-19
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Granted: 1969-12-09
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Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 Kurt Herbert Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0668; F16K31/0648; F16K31/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US358719A
Cited
US1779637A
Cited
US2063655A
Cited
US2916252A
Cited
US3037738A
Cited
US3274984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |