US3091999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base spreader
Assignee: ULMAC EQUIPMENT CO
•
Filing: 1960-01-07
•
Granted: 1963-06-04
•
Expires: 1980-01-07
Abstract
No abstract record available.
Inventors
- 👤 Raymore D Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:14
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/15
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A WHEELED BASE SPREADING APPARATUS FOR ATTACHMENT TO A TRACTOR HAVING A DOZER BLADE FOR EFFECTIVELY APPLYING BASE AGGREGATE OF A SUBSTANTIALLY CONSTANT DEPTH ON A ROAD BED COMPRISING LONGITUDINAL FRAME MEMBERS, MEANS TO CONNECT THE FRAME MEMBERS TO THE TRACTOR, ADJUSTABLE CROSS BEAM MEMBERS SECURED TO THE FRAME MEMBERS, SIDE PANEL MEMBERS SECURED TO THE FRAME MEMBERS, ADJUSTABLE EXTENSION DOORS HINGED AT THEIR FORWARD EDGES TO SAID SIDE PANEL MEMBERS, A SECTIONAL STRIKE-OFF BLADE, A GATE MEMBER HINGED TO EACH END OF SAID SECTIONAL STRIKE-OFF BLADE, SAID GATE MEMBER BEING OVERLAPPED BY THE EXTENSION DOORS, AND VERTICALLY ADJUSTABLE MEANS SUPPORTING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |