US2670046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing scraper
Assignee: Individual
•
Filing: 1950-01-03
•
Granted: 1954-02-23
•
Expires: 1970-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert B Kinzbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02; E21B29/00; E21B29/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US903854A
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US1174568A
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US1893224A
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US2025009A
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US2275939A
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US2464390A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |