US2237959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broaching machine for gears
Assignee: Hansen Manufacturing Co Inc
•
Filing: 1938-07-05
•
Granted: 1941-04-08
•
Expires: 1958-07-05
Abstract
No abstract record available.
Inventors
- 👤 William L Hansen
- 👤 Ira N Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:56
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/26; B23F21/268; B23F1/00; B23F1/08; B23F1/086; B23F23/00; B23F23/12; Y; Y10; Y10T; Y10T407/00; Y10T407/16; Y10T407/1614; Y10T409/00; Y10T409/10; Y10T409/109063; Y10T409/109222
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-04-07 | 1944-10-07 | 1945-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-07 | 1948-10-07 | 1949-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-07 | 1952-10-07 | 1953-04-08 | $7700.00 | Window Closed / Lapsed |