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Patent US175650A successfully refreshed from Google Patents.
US175650A
Expired / Lapsed
US
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Improvement in flat-iron polishers and knife-sharpeners
Assignee: —
•
Filing: —
•
Granted: 1876-04-04
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Expires: 1893-04-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:41
CPC Classifications
B; B24; B24D; B24D15/00; B24D15/02; B24D15/023; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44034; Y10T24/44043
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) | 1879-04-04 | 1879-10-04 | 1880-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1883-04-04 | 1883-10-04 | 1884-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1887-04-04 | 1887-10-04 | 1888-04-04 | $7700.00 | Window Closed / Lapsed |