US2949201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mucking machine
Assignee: Shaft Machines Ltd
•
Filing: 1957-07-30
•
Granted: 1960-08-16
•
Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 Roderick T Macalpine
- 👤 Lawrence A James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:20
CPC Classifications
E; E21; E21D; E21D1/00; E21D1/03; E21D1/04; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/283; E02F3/286; E02F3/36; E02F3/38; E02F3/382; E02F3/384; E02F3/40; E02F3/413; E02F3/4136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US198957A
Cited
US1389021A
Cited
US1611326A
Cited
US2538711A
Cited
US2649189A
Cited
US2684159A
Cited
US2679922A
Cited
US2781140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |