Patent US2530503A successfully refreshed from Google Patents.
US2530503A
Expired / Lapsed
US
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Continuous extrusion machine
Assignee: Nixon Nitration Works
•
Filing: 1947-08-02
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Granted: 1950-11-21
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Expires: 1967-08-02
Abstract
No abstract record available.
Inventors
- 👤 William H Bonham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:10
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/36; B29C48/395; B29C48/94; B29C48/07; B29C48/08; B29C48/10; Y; Y10; Y10S; Y10S425/00; Y10S425/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE58128C
Cited
US2371060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |