Patent US3442189A successfully refreshed from Google Patents.
US3442189A
Expired / Lapsed
US
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Concrete spreader
Assignee: Cleveland Equipment Corp
•
Filing: 1966-09-15
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Granted: 1969-05-06
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Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Maurice E Robinson
- 👤 Robert E Jokinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:26
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967178A
Cited
US2099071A
Cited
US2768732A
Cited
US2788116A
Cited
US2962949A
Cited
US3054334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |