US3395906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary trona calciner
Assignee: Stauffer Chemical Co
•
Filing: 1966-04-13
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Granted: 1968-08-06
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Expires: 1986-04-13
Abstract
No abstract record available.
Inventors
- 👤 James V Wiseman
- 👤 Henry D Hellmers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:18
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/14; F27B7/16; F27B7/161; B; B01; B01J; B01J6/00; B01J6/001; B01J6/002; C; C01; C01D; C01D7/00; C01D7/12; C01D7/123; F27B7/20; F27B7/32; F27B7/3205; F27B2007/3211; F27B2007/3217; F27B2007/3241
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) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |