US3406950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conditioning material
Assignee: National Engineering Co
•
Filing: 1965-10-23
•
Granted: 1968-10-22
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Mcilvaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:25
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/08; B01; B01F; B01F35/00; B01F35/90; B01F35/91; B22C5/04; B22C5/0409; B22C5/044; F; F16; F16K; F16K27/00; F16K27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1331576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |