US2593602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means
Assignee: Celanese Corp
•
Filing: 1946-07-01
•
Granted: 1952-04-22
•
Expires: 1966-07-01
Abstract
No abstract record available.
Inventors
- 👤 Pool William
- 👤 Taylor William Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:54
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/24; F04B; F04B49/00; F04B49/007; F04B49/22; F04B49/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |