US2607435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for increasing the bulk density of pulverulent materials
Assignee: Individual
•
Filing: 1950-03-20
•
Granted: 1952-08-19
•
Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 Dohse Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/0005; B30B15/0017; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/60
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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |