US2418199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kerf cutting means
Assignee: Joy Manufacturing Co
•
Filing: 1943-10-02
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Granted: 1947-04-01
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Expires: 1963-10-02
Abstract
No abstract record available.
Inventors
- 👤 Leon E Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
E; E21; E21C; E21C25/00; E21C25/22; E21C25/28; E21C25/34; E21C25/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US762335A
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US1023549A
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US1508854A
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US1808236A
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US1932187A
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US2214644A
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US2204344A
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US2324033A
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US2304505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |