US2217306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper windening machine
Assignee: ELK PAPER Manufacturing Co
•
Filing: 1938-04-25
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Granted: 1940-10-08
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Expires: 1958-04-25
Abstract
No abstract record available.
Inventors
- 👤 Burrill Harold Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:22
CPC Classifications
B; B65; B65H; B65H39/00; B65H39/16; B31; B31F; B31F5/00; B31F5/04; B65H2301/00; B65H2301/40; B65H2301/46; B65H2301/4695; Y; Y10; Y10T; Y10T156/00; Y10T156/14; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1715; Y10T156/172
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |