US2348611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp for holding drill rods or casings
Assignee: Individual
•
Filing: 1942-06-12
•
Granted: 1944-05-09
•
Expires: 1962-06-12
Abstract
No abstract record available.
Inventors
- 👤 Davidson Cecil Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/14; E21D15/28; E21D15/34; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3993; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17136; Y10T279/17145; Y10T403/00; Y10T403/59; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066; Y10T74/20732; Y10T74/20834; Y10T74/20852
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-09 | 1947-11-08 | 1948-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-09 | 1951-11-08 | 1952-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-09 | 1955-11-08 | 1956-05-09 | $7700.00 | Window Closed / Lapsed |