Patent US711992A successfully refreshed from Google Patents.
US711992A
Expired / Lapsed
US
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Excavating-tooth for power-shovels.
Assignee: Individual
•
Filing: 1902-04-09
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Granted: 1902-10-28
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Expires: 1922-04-09
Abstract
No abstract record available.
Inventors
- 👤 Volney W Mason Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:10
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808
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) | 1905-10-27 | 1906-04-28 | 1906-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-10-27 | 1910-04-28 | 1910-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-10-27 | 1914-04-28 | 1914-10-28 | $7700.00 | Window Closed / Lapsed |