US2472392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw driver
Assignee: Individual
•
Filing: 1946-04-12
•
Granted: 1949-06-07
•
Expires: 1966-04-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/08; B25G1/085; B25B; B25B23/00; B25B23/0007; B25B23/0035; B25B23/16; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17666; Y10T279/17692; Y10T279/17743; Y10T279/17761; Y10T279/17811; Y10T403/00; Y10T403/59; Y10T403/599
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) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |