US2590053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete drilling device
Assignee: Individual
•
Filing: 1950-04-07
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Granted: 1952-03-18
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Expires: 1970-04-07
Abstract
No abstract record available.
Inventors
- 👤 Ervin W Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:02
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/003; B; B28; B28D; B28D1/00; B28D1/14; B28D1/146; Y; Y10; Y10S; Y10S408/00; Y10S408/713; Y10T; Y10T407/00; Y10T407/22; Y10T407/2272; Y10T407/2282; Y10T407/2286; Y10T407/2288; Y10T407/23; Y10T408/00; Y10T408/86; Y10T408/865; Y10T408/868; Y10T408/89; Y10T408/907
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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |