Patent US758761A successfully refreshed from Google Patents.
US758761A
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US
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Clutch-head for rock-drills.
Assignee: WILLIAM F LEARY
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Filing: 1903-05-26
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Granted: 1904-05-03
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Expires: 1923-05-26
Abstract
No abstract record available.
Inventors
- 👤 John E Littleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:55
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1207; B23B31/1253; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17564; Y10T279/17572; Y10T279/17581
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) | 1907-05-03 | 1907-11-02 | 1908-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-05-03 | 1911-11-02 | 1912-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-05-03 | 1915-11-02 | 1916-05-03 | $7700.00 | Window Closed / Lapsed |