US2814070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic extruder
Assignee: Standard Oil Co
•
Filing: 1955-05-05
•
Granted: 1957-11-26
•
Expires: 1975-05-05
Abstract
No abstract record available.
Inventors
- 👤 William L Bulkley
- 👤 Arthur A Harban
- 👤 John R Krebs
- 👤 Jr Charles J Ryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:58
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/03; B29C48/06; B29C48/07; B29C48/08; B29C48/09; B29C48/36; B29C48/475; B29C48/86; B29C48/865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US635026A
Cited
US2117179A
Cited
US2233987A
Cited
US2366417A
Cited
US2405039A
Cited
US2508988A
Cited
US2587930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |