US3442122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing probe for soils
Assignee: Individual
•
Filing: 1966-12-05
•
Granted: 1969-05-06
•
Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 Yvon Marie-Xavier Broise
- 👤 Alan Thorley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:56
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |