US2940523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-feeding casing mill
Assignee: Joy Manufacturing Co
•
Filing: 1957-04-01
•
Granted: 1960-06-14
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ora A Brown
- 👤 Glenn D Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:10
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/002; E21B29/005; Y; Y10; Y10T; Y10T82/00; Y10T82/12; Y10T82/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1773389A
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US1772710A
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US2215638A
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US2183922A
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US2228498A
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US2344955A
Cited
US2460948A
Cited
US2690897A
Cited
US2785025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |