US2685038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for measuring the depth of penetration of bullets within subsurface formations
Assignee: Individual
•
Filing: 1951-05-08
•
Granted: 1954-07-27
•
Expires: 1971-05-08
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hoss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:51
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/04; E21B47/053
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) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |