US2622847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for operating excavating tools
Assignee: Individual
•
Filing: 1949-08-31
•
Granted: 1952-12-23
•
Expires: 1969-08-31
Abstract
No abstract record available.
Inventors
- 👤 George E Baldry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:44
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; E21B7/00; E21B7/02; Y; Y10; Y10T; Y10T74/00; Y10T74/17; Y10T74/177
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2346958A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |