US3397862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge gate vacuum valve mechanism with coated seat seal
Assignee: United States Atomic Energy Commission
•
Filing: 1965-12-16
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Granted: 1968-08-20
•
Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Batzer
- 👤 Cleve A Gunderson
- 👤 John J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/18; F16K3/184; F16K51/00; F16K51/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR64323E
Cited
US2869819A
Cited
US3038692A
Cited
US3112095A
Cited
US3182954A
Cited
US3237915A
Cited
US3352535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |