US3479931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary dies
Assignee: Deritend Engineering Co Ltd
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Filing: 1966-01-14
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Granted: 1969-11-25
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Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:12
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/44; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/14; B26D1/24; B26D1/245; B26D7/00; B26D7/26; B26D7/2614; B26F1/384; B26D2007/2607; B26F2001/4463; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0207; Y10T83/0215; Y10T83/929; Y10T83/9372; Y10T83/9457; Y10T83/9464
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |