US3220322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pavement surfacing machine
Assignee: Individual
•
Filing: 1962-08-28
•
Granted: 1965-11-30
•
Expires: 1982-08-28
Abstract
No abstract record available.
Inventors
- 👤 Lewis William Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:42
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/30; E01C19/34; E01C19/40; E01C19/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PAVEMENT SURFACING MACHINE TO ELIMINATE LOCAL SURFACE IRREGULARITIES IN AN ELONGATED STRIP OF CONCRETE UNBOUNDED BY SIDE FORMS AND WHICH HAS ALREADY BEEN GENERALLY LEVELED BY CONVENTIONAL MEANS, SAID MACHINE COMPRISING: A PAIR OF LONGITUDINALLY SPACED, TRANSVERSE LEVELING PLATES, EACH HAVING AN UPTURNED LEADING EDGE ADAPTED TO SMOOTHLY ENGAGE THE SURFACE OF SAID STRIP OF CONCRETE, SAID LEVELING PLATES BEING ADAPTED TO SPAN THE WIDTH OF SAID STRIP OF CONCRETE AND SLIDE UPON SAID
Claim 2
Dependent Claim
75 words
A PAVEMENT SURFACING MACHINE TO ELIMINATE LOCAL SURFACE IRREGULARITIES IN AN ELONGATED STRIP OF CONCRETE UNBOUNDED BY SIDE FORMS AND WHICH HAS ALREADY BEEN GENERALLY LEVELED BY CONVENTIONAL MEANS, SAID MACHINE COMPRISING: A PAIR OF LONGITUDINALLY SPACED, TRANSVERSE LEVELING PLATES, EACH HAVING AN UPTURNED LEADING EDGE ADAPTED TO SMOOTHLY ENGAGE THE SURFACE OF SAID STRIP OF CONCRETE, SAID LEVELING PLATES BEING ADAPTED TO SPAN THE WIDTH OF SAID STRIP OF CONCRETE AND SLIDE UPON SAID
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |