US3367667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll seal for vacuum strip-treating chamber
Assignee: United States Steel Corp
•
Filing: 1965-07-16
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Granted: 1968-02-06
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Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 William S Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0073; C; C21; C21D; C21D1/00; C21D1/74; C21D1/773; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/562; C21D9/565; C23; C23C; C23C14/00; C23C14/22; C23C14/56; C23C14/562; F16; F16J; F16J15/00; F16J15/16; F16J15/168; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2407; F27B9/28; Y; Y10; Y10S; Y10S277/00; Y10S277/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1208339A
Cited
US1633121A
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US2434003A
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US2707162A
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US2844889A
Cited
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Cited
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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) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |