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US872439A
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US
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Scraper-pan bit.
Assignee: Smith & Sons Manufacturing Co
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Filing: 1906-10-23
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Granted: 1907-12-03
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Expires: 1926-10-23
Abstract
No abstract record available.
Inventors
- 👤 Winfield S Livengood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:00
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/815; E02F3/8152
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) | 1910-12-02 | 1911-06-03 | 1911-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-12-02 | 1915-06-03 | 1915-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-12-02 | 1919-06-03 | 1919-12-03 | $7700.00 | Window Closed / Lapsed |