US2844846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic film extruder
Assignee: CHESTER PACKAGING PRODUCTS COR
•
Filing: 1954-09-02
•
Granted: 1958-07-29
•
Expires: 1974-09-02
Abstract
No abstract record available.
Inventors
- 👤 Carl A Kronholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:19
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9115; B29C48/912; B29C48/03; B29C48/09; B29C48/10; B29C48/355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1809303A
Cited
US2323025A
Cited
US2607078A
Cited
US2668323A
Cited
US2697852A
Cited
US2632206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |