US3391913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid bed kiln
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1966-02-23
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Granted: 1968-07-09
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Expires: 1986-02-23
Abstract
No abstract record available.
Inventors
- 👤 Ii Cecil M Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
F; F27; F27B; F27B15/00; C; C21; C21D; C21D1/00; C21D1/34; C21D1/53
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |