US2926384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distributor ring
Assignee: Celanese Corp
•
Filing: 1953-10-20
•
Granted: 1960-03-01
•
Expires: 1973-10-20
Abstract
No abstract record available.
Inventors
- 👤 David B Hertz
- 👤 Chow Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/885; B29C48/03; B29C48/06; B29C48/09; B29C48/10; B29C48/911; B29C48/9115; B29C48/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1989340A
Cited
US2047554A
Cited
GB501468A
Cited
US2528200A
Cited
US2583330A
Cited
US2720679A
Cited
US2631332A
Cited
US2668323A
Cited
US2753596A
Cited
US2632206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |