Patent US3491631A successfully refreshed from Google Patents.
US3491631A
Expired / Lapsed
US
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Foam material cutter
Assignee: Independent General Inc
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Filing: 1967-07-20
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Granted: 1970-01-27
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Expires: 1987-07-20
Abstract
No abstract record available.
Inventors
- 👤 Jerald Paul Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:20
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/006; B23; B23D; B23D49/00; B23D49/003; B23D49/006; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/687; Y10T83/6895; Y10T83/869; Y10T83/8748; Y10T83/8749; Y10T83/8798; Y10T83/8817; Y10T83/882
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) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |