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US3457618A
Expired / Lapsed
US
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Magnetic roll structure and method of forming same
Assignee: Gunter and Cooke Inc
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Filing: 1967-01-10
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Granted: 1969-07-29
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Expires: 1987-01-10
Abstract
No abstract record available.
Inventors
- 👤 James Everett O'neal
- 👤 Josef Karl Gunter
- 👤 Colie Walton Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/94; D01G15/96; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/49547; Y10T29/49549
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |