Patent US3382002A successfully refreshed from Google Patents.
US3382002A
Expired / Lapsed
US
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Rotary cutter wheel tunneling machine
Assignee: Individual
•
Filing: 1965-07-23
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Granted: 1968-05-07
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Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 John R Tabor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:33
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/06; E21D9/08; E21D9/0875; E21D9/0879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US899606A
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US1530768A
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US1554723A
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US1569787A
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US1948707A
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US3075359A
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GB934996A
Cited
US3301600A
Cited
US3266257A
Cited
US3309142A
Cited
US3307876A
Cited
US3232670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |