US2889581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extruding plastic material
Assignee: Resistoflex Corp
•
Filing: 1955-03-08
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Granted: 1959-06-09
•
Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Alton S Vanderhoof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/12; B29C48/25; B29C48/88; B29C48/911; B29C48/9115; B29C48/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1370800A
Cited
US2378539A
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US2375827A
Cited
US2400094A
Cited
GB686438A
Cited
US2685707A
Cited
US2655690A
Cited
US2683285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |