US796327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for rock-drills.
Assignee: Individual
•
Filing: 1904-06-03
•
Granted: 1905-08-01
•
Expires: 1924-06-03
Abstract
No abstract record available.
Inventors
- 👤 Martin Hardsocg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:44
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/01; E21B21/015
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) | 1908-07-31 | 1909-01-30 | 1909-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-07-31 | 1913-01-30 | 1913-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-07-31 | 1917-01-30 | 1917-08-01 | $7700.00 | Window Closed / Lapsed |