US2838282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor mounted rock drills
Assignee: WINTER WEISS CO
•
Filing: 1955-02-09
•
Granted: 1958-06-10
•
Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Colquitt Odie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:37
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2144586A
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US1956200A
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US2041690A
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US2281952A
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US2310001A
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US2594098A
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US2418601A
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US2451223A
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US2564188A
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US2665116A
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US2711880A
Cited
US2740609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |