US2951600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compaction bodies
Assignee: Dempster Brothers Inc
•
Filing: 1958-04-16
•
Granted: 1960-09-06
•
Expires: 1978-04-16
Abstract
No abstract record available.
Inventors
- 👤 George R Dempster
- 👤 William A Herpich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:30
CPC Classifications
B; B65; B65F; B65F3/00; B65F3/02; B65F3/04; B60; B60P; B60P1/00; B60P1/48; B60P1/50; B65F3/24; B65F3/28; B65F2003/0263; B65F2003/0279
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2622748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |