US1857516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary broaching machine
Assignee: Perkins Machine & Gear Co
•
Filing: 1928-12-04
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Granted: 1932-05-10
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Expires: 1948-12-04
Abstract
No abstract record available.
Inventors
- 👤 Oakley John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
B; B23; B23D; B23D37/00; B23D37/02; B23D37/06; Y; Y10; Y10T; Y10T409/00; Y10T409/40; Y10T409/4035; Y10T409/404375; Y10T409/40455; Y10T409/404725; Y10T409/40525
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) | 1935-05-10 | 1935-11-09 | 1936-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-10 | 1939-11-09 | 1940-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-10 | 1943-11-09 | 1944-05-10 | $7700.00 | Window Closed / Lapsed |