US2467938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible mantle for gyratory crushers
Assignee: Individual
•
Filing: 1945-12-15
•
Granted: 1949-04-19
•
Expires: 1965-12-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1549641A
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US1587085A
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US1837102A
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US1985098A
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US1957228A
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FR683852A
Cited
US2147833A
Cited
GB471842A
Cited
US2168582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |