US3397542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating soils
Assignee: HI PRESSURE SOIL STABILIZERS Inc
•
Filing: 1964-04-21
•
Granted: 1968-08-20
•
Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert R Moulden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1422831A
Cited
US1849903A
Cited
GB415326A
Cited
US2235695A
Cited
US2196211A
Cited
US2619055A
Cited
US3079129A
Cited
US3094846A
Cited
US3243962A
Cited
US3129924A
Cited
US3289418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |