US2728104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved extrusion process and apparatus
Assignee: Individual
•
Filing: 1952-03-07
•
Granted: 1955-12-27
•
Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 Richard A Fisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US237628A
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US1159895A
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US1584283A
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US1740029A
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US2246236A
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US2167971A
Cited
US2315477A
Cited
US2294555A
Cited
US2582340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |