US2518591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for jet mining and excavating
Assignee: Individual
•
Filing: 1945-09-19
•
Granted: 1950-08-15
•
Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Aston Cecil Percy Tooth
- 👤 Wildi Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/29; E21B21/00; E21B21/12; E21B7/00; E21B7/18; E21B7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371174A
Cited
US823749A
Cited
AT89840B
Cited
US1607586A
Cited
US1960932A
Cited
US2204018A
Cited
US2251916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |