US3467399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll seal for vacuum strip-treating chamber
Assignee: United States Steel Corp
•
Filing: 1967-07-17
•
Granted: 1969-09-16
•
Expires: 1987-07-17
Abstract
No abstract record available.
Inventors
- 👤 Calvin E Kelly
- 👤 Thomas E Nicely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/168; 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; F27; F27D; F27D99/00; F27D99/0073; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2407; F27B9/28; Y; Y10; Y10S; Y10S277/00; Y10S277/906; Y10S277/913
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1595240A
Cited
US1683254A
Cited
US1924883A
Cited
US2721144A
Cited
FR1267775A
Cited
US3158507A
Cited
US3048992A
Cited
US3260000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |