US2643595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for compacting granular mass material
Assignee: Individual
•
Filing: 1947-11-03
•
Granted: 1953-06-30
•
Expires: 1967-11-03
Abstract
No abstract record available.
Inventors
- 👤 Jackson Corwill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:14
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303566A
Cited
FR511247A
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US1657727A
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US1988315A
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FR41949E
Cited
US2223024A
Cited
US2180198A
Cited
US2259110A
Cited
US2306123A
Cited
US2289248A
Cited
US2306124A
Cited
US2306125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |