US1874503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion die
Assignee: Stephen F Whitman & Son Inc
•
Filing: 1930-07-12
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Granted: 1932-08-30
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Expires: 1950-07-12
Abstract
No abstract record available.
Inventors
- 👤 George W Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
A; A23; A23G; A23G3/00; A23G3/02; A23G3/0236; A23G3/0242; A23G3/0294; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/12; B29C48/25; B29C48/30; B29C48/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-08-30 | 1936-02-29 | 1936-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-30 | 1940-02-29 | 1940-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-30 | 1944-02-29 | 1944-08-30 | $7700.00 | Window Closed / Lapsed |