US2991360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film treating apparatus
Assignee: Celanese Corp
•
Filing: 1955-11-21
•
Granted: 1961-07-04
•
Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Schneider Alfred
- 👤 Plonsky Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:39
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1947220A
Cited
US2043217A
Cited
US2221338A
Cited
US2333213A
Cited
US2319174A
Cited
US2588675A
Cited
US2752533A
Cited
US2810933A
Cited
US2882412A
Cited
US2864756A
Cited
US2802085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |