US2833144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penetrometer for in situ measurements
Assignee: Individual
•
Filing: 1955-07-15
•
Granted: 1958-05-06
•
Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Miller
- 👤 John D Nixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:14
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42; 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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |