US2582873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible spindle for rotary power tools
Assignee: Independent Pneumatic Tool Co
•
Filing: 1947-04-28
•
Granted: 1952-01-15
•
Expires: 1967-04-28
Abstract
No abstract record available.
Inventors
- 👤 Gilbert B Larson
- 👤 James A Perham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:55
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/04; Y; Y10; Y10T; Y10T403/00; Y10T403/65; Y10T403/66; Y10T403/71; Y10T403/7152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210268A
Cited
US1039342A
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US1548629A
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US2112695A
Cited
FR798315A
Cited
US2100232A
Cited
US2259797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |