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US2275438A
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Method of preparing sheet material
Assignee: Primerica Inc
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Filing: 1938-12-31
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Granted: 1942-03-10
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Expires: 1958-12-31
Abstract
No abstract record available.
Inventors
- 👤 John M Hothersall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B21J15/32; B21F; B21F11/00; B21J15/02; B21J15/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833
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) | 1945-03-09 | 1945-09-08 | 1946-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-09 | 1949-09-08 | 1950-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-09 | 1953-09-08 | 1954-03-10 | $7700.00 | Window Closed / Lapsed |