US2770836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure head for extruders
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-06-10
•
Granted: 1956-11-20
•
Expires: 1973-06-10
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Hankey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:33
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/25; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92209; B29C2948/92504; B29C2948/92514; B29C2948/92819; B29C2948/92857; B29C2948/92904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1516843A
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US2403476A
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US2660302A
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US2488189A
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US2537977A
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US2541201A
Cited
DE836818C
Cited
US2593265A
Cited
US2683897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |