Patent US3108388A successfully refreshed from Google Patents.
US3108388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth-moving machine
Assignee: Johnson Manufacturing Co
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Filing: 1961-06-27
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Granted: 1963-10-29
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Expires: 1981-06-27
Abstract
No abstract record available.
Inventors
- 👤 Charles M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:48
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/6454; E02F3/6472; E02F3/654; E02F3/656
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
IN AN EARTH-SCRAPING AND MOVING MACHINE WHICH INCLUDES A FRAME ASSEMBLY HAVING AN OPEN FRONT, A REAR AND SIDES AND A PLURALITY OF OPEN-FRONT EARTH-RECEIVING BUCKETS PIVOTED BETWEEN SAID SIDES FOR MOVEMENT IN A VERTICAL PLANE, SAID BUCKETS BEING POSITIONED ONE BEHIND ANOTHER, THE IMPROVED CONSTRUCTED COMPRISING: SIDE WALLS SUPPORTED BY SAID FRAME ASSEMBLY BETWEEN SAID BUCKETS AND SAID FRAME ASSEMBLY; SIDE MEMBERS FORMING SIDES OF SAID BUCKETS AND SPACED FROM SAID WALLS; SCRAPING MEANS
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |