US2593229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit
Assignee: Wheel Trueing Tool Co
•
Filing: 1947-11-14
•
Granted: 1952-04-15
•
Expires: 1967-11-14
Abstract
No abstract record available.
Inventors
- 👤 Harry W Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:18
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US473479A
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US1030284A
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US1045756A
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US1299619A
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GB449974A
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US2136359A
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US2210039A
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US2304482A
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GB545808A
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US2371489A
Cited
US2381415A
Cited
US2371490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |