US2473815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool apparatus
Assignee: Perkins Machine & Gear Co
•
Filing: 1945-12-13
•
Granted: 1949-06-21
•
Expires: 1965-12-13
Abstract
No abstract record available.
Inventors
- 👤 Oakley John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:17
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/26; B23F21/268; Y; Y10; Y10T; Y10T407/00; Y10T407/16; Y10T407/1614
Claims Analysis
Total Claims: 0
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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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |