US2444232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crown closure feeding device
Assignee: Dewey and Almy Chemical Co
•
Filing: 1944-06-10
•
Granted: 1948-06-29
•
Expires: 1964-06-10
Abstract
No abstract record available.
Inventors
- 👤 Dunbar L Shanklin
- 👤 Richard P Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:04
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/44; B21D51/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US613349A
Cited
US702388A
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US944352A
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US1081505A
Cited
US1748914A
Cited
US1932529A
Cited
US2069762A
Cited
US2133353A
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US2344460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |