US2889723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible power tool support
Assignee: Individual
•
Filing: 1956-06-15
•
Granted: 1959-06-09
•
Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:38
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/089; B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0035; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1833781A
Cited
US2051420A
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US2378869A
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US2405110A
Cited
US2571862A
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US2583945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |