US2758825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for boring galleries, tunnels, channels and the like by cutting action
Assignee: Individual
•
Filing: 1952-03-17
•
Granted: 1956-08-14
•
Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 Wohlmeyer Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:44
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/1086; E21D9/11; E21D9/116; E21D9/118
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE65280C
Cited
US1326480A
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US2118490A
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CH249316A
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US2466709A
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US2404605A
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US2619338A
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US2619339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |