US2428995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding granular materials into a head of pressure
Assignee: Individual
•
Filing: 1945-05-11
•
Granted: 1947-10-14
•
Expires: 1965-05-11
Abstract
No abstract record available.
Inventors
- 👤 Rogers John Berrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
F; F23; F23K; F23K3/00; B; B65; B65G; B65G53/00; B65G53/04; B65G53/06; B65G53/08; F23K2203/00; F23K2203/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1376043A
Cited
US1850683A
Cited
US2028407A
Cited
US2184248A
Cited
DE675772C
Cited
US2321015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |