US731569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock-drilling machine.
Assignee: Individual
•
Filing: 1902-12-30
•
Granted: 1903-06-23
•
Expires: 1922-12-30
Abstract
No abstract record available.
Inventors
- 👤 John G Heimrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:42
CPC Classifications
E; E21; E21B; E21B1/00; E21B1/12; E21B1/24; E21B1/26; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18048; Y10T74/18056; Y10T74/18248; Y10T74/18256
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) | 1906-06-22 | 1906-12-22 | 1907-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-06-22 | 1910-12-22 | 1911-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-06-22 | 1914-12-22 | 1915-06-23 | $7700.00 | Window Closed / Lapsed |