US2237875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck jaw
Assignee: AMF Inc
•
Filing: 1938-02-08
•
Granted: 1941-04-08
•
Expires: 1958-02-08
Abstract
No abstract record available.
Inventors
- 👤 Brown Frederick Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:31
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1207; B23B31/1253; B23B31/008; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17666; Y10T279/19; Y10T279/1913
Claims Analysis
Total Claims: 0
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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 |