US2951683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core drill
Assignee: VILLAGE OF DEMING
•
Filing: 1957-07-16
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Granted: 1960-09-06
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Expires: 1977-07-16
Abstract
No abstract record available.
Inventors
- 👤 Carl V Tilden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:12
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; B; B23; B23B; B23B51/00; B23B51/04; B23B51/0466; E21B10/02; E21B10/06; E21B10/08; E21B10/12; E21B10/46; E21B10/48; E21B10/56; B23B2205/00; B23B2205/02; B23B2222/00; B23B2222/28
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |