Patent US758781A successfully refreshed from Google Patents.
US758781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavating-machine.
Assignee: WILLIAM E BELTER
•
Filing: 1903-09-24
•
Granted: 1904-05-03
•
Expires: 1923-09-24
Abstract
No abstract record available.
Inventors
- 👤 William J Roelofson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |