Patent US2962947A successfully refreshed from Google Patents.
US2962947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road base spreading apparatus
Assignee: Ulrich Manufacturing Co
•
Filing: 1959-01-09
•
Granted: 1960-12-06
•
Expires: 1979-01-09
Abstract
No abstract record available.
Inventors
- 👤 Raymore D Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:44
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1446464A
Cited
US1724054A
Cited
US1979619A
Cited
US1970391A
Cited
US2054437A
Cited
US2326338A
Cited
US2483033A
Cited
US2591502A
Cited
US2757587A
Cited
GB736226A
Cited
US2888864A
Cited
US2794274A
Cited
GB775284A
Cited
US2816375A
Cited
US2874621A
Cited
US2896343A
Cited
US2832158A
Cited
US2890632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |