US2821745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic tube extruder
Assignee: Bridgestone Firestone Inc
•
Filing: 1953-12-11
•
Granted: 1958-02-04
•
Expires: 1973-12-11
Abstract
No abstract record available.
Inventors
- 👤 John D Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:26
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/86; B29C48/03; B29C48/09; B29C48/30; B29C48/32; B29C48/865; B29K; B29K2021/00; B29K2995/00; B29K2995/0037; B29K2995/0072; B29K2995/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US791111A
Cited
US1603325A
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US2291212A
Cited
DE761481C
Cited
US2512844A
Cited
US2576444A
Cited
DE841782C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |