Patent US3561259A successfully refreshed from Google Patents.
US3561259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the shearing resistance of the soil
Assignee: STICHTING WATERBOUWKUNDIG LABORATORIUM
•
Filing: 1968-06-13
•
Granted: 1971-02-09
•
Expires: 1988-06-13
Abstract
Abstract AN APPARATUS FOR DETERMINING THE SHEARING RESISTANCE OF THE SOIL IS DESCRIBED, IN WHICH THE ROTATION OF VANES PRESSED INTO THE SOIL AND ROTATED BY MEANS OF A ROTATION BAR IS DETERMINED BY MEANS OF ELETRIC CONTACTS DISPOSED NEAR SAID VANES IN ORDER TO EXCLUDE THE TORSION ANGLE OF SAID BAR FROM THE MEASUREMENT OF THE ROTATION OF SAID VANES.
Inventors
- 👤 Diederik G Barendse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:18
CPC Classifications
E; E02; E02D; E02D1/00; E02D1/02; E02D1/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |