US1653111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining mechanism
Assignee: Sullivan Machinery Co
•
Filing: 1921-08-03
•
Granted: 1927-12-20
•
Expires: 1941-08-03
Abstract
No abstract record available.
Inventors
- 👤 Fred T Lobbey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:59
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/081; E21B7/00; E21B7/003; E21B7/005
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) | 1930-12-19 | 1931-06-20 | 1931-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-19 | 1935-06-20 | 1935-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-19 | 1939-06-20 | 1939-12-20 | $7700.00 | Window Closed / Lapsed |