Patent US3568453A successfully refreshed from Google Patents.
US3568453A
Expired / Lapsed
US
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Apparatus for forming dikes
Assignee: Dart Industries Inc
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Filing: 1968-09-23
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Granted: 1971-03-09
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Expires: 1988-09-23
Abstract
Abstract THE PRESENT INVENTION RELATES TO AN APPARATUS FOR FORMING BARRIERS FOR IMPOUNDING WATER FOR USE IN DIKING RICE FIELDS OR THE LIKE COMPRISING A VEHICLE PROVIDED WITH MEANS FOR GATHERING EARTH FOR A LIMITED AREA ALONG BOTH SIDES OF A DESIRED PATH, FORMING THE GATHERED EARTH INTO A MOUND OF THE DESIRED HEIGHT, WIDTH AND SHAPE, COVERING THE FORMED MOUND WITH PLASTIC TO PREVENT WEED GROWTH AND EROSION AND EMBEDDING THE FILM IN THE EARTH TO PREVENT ACCIDENTAL REMOVAL OF THE PLASTIC FROM THE MOUND.
Inventors
- 👤 Robert M Ziegenmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:50
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; A; A01; A01B; A01B13/00; A01B13/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |