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US3007674A
Expired / Lapsed
US
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Valve for ultra-high vacuum apparatus
Assignee: WC Heraus GmbH and Co KG
•
Filing: 1959-04-03
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Granted: 1961-11-07
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Expires: 1979-04-03
Abstract
No abstract record available.
Inventors
- 👤 Lorenz Albert
- 👤 Boye Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:04
CPC Classifications
F; F16; F16K; F16K51/00; F16K51/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE17022E
Cited
US1619033A
Cited
GB484741A
Cited
US2665875A
Cited
US2840336A
Cited
US2765806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |