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US2950085A
Expired / Lapsed
US
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Machine for pushing pipe or conduit
Assignee: Individual
•
Filing: 1955-05-25
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Granted: 1960-08-23
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Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Lizzadro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:03
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/04; E21B7/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FI27435A
Cited
US1776798A
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US2080104A
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US2124154A
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US2373848A
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US2556175A
Cited
US2501001A
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US2517813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |