US2747384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible extension attachment for electric drills
Assignee: Individual
•
Filing: 1954-05-06
•
Granted: 1956-05-29
•
Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Beam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:16
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/02; F16C1/08; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/665
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1386161A
Cited
FR536436A
Cited
US1680000A
Cited
GB275504A
Cited
US1922610A
Cited
US1871528A
Cited
US2158577A
Cited
US2305895A
Cited
US2357773A
Cited
CH281515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |