Patent US838250A successfully refreshed from Google Patents.
US838250A
Expired / Lapsed
US
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Machine for grinding or cutting.
Assignee: HARRY I CHEW
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Filing: 1904-03-10
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Granted: 1906-12-11
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Expires: 1924-03-10
Abstract
No abstract record available.
Inventors
- 👤 John W Hudlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:47
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/02; B24B5/16; B24B5/167; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30784; Y10T409/308512
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) | 1909-12-10 | 1910-06-11 | 1910-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-10 | 1914-06-11 | 1914-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-10 | 1918-06-11 | 1918-12-11 | $7700.00 | Window Closed / Lapsed |