Patent US1174568A successfully refreshed from Google Patents.
US1174568A
Expired / Lapsed
US
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Rotary boring-drill.
Assignee: SHARP-HUGHES TOOL Co
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Filing: 1913-06-11
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Granted: 1916-03-07
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Expires: 1933-06-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:02
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/26; E21B10/28; E21B10/30
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) | 1919-03-07 | 1919-09-06 | 1920-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-03-07 | 1923-09-06 | 1924-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-03-07 | 1927-09-06 | 1928-03-07 | $7700.00 | Window Closed / Lapsed |