US1412868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine
Assignee: Jeffrey Manufacturing Co
•
Filing: 1916-06-05
•
Granted: 1922-04-18
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Expires: 1936-06-05
Abstract
No abstract record available.
Inventors
- 👤 Morris P Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:12
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/04; E21C35/043
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) | 1925-04-17 | 1925-10-17 | 1926-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-04-17 | 1929-10-17 | 1930-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-04-17 | 1933-10-17 | 1934-04-18 | $7700.00 | Window Closed / Lapsed |