US2937814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball-crusher
Assignee: CENTRE D'ETUDES ET DE RECHERCHES DE L'INDUSTRIE DES LIANTS HYDRAULICS
•
Filing: 1954-05-04
•
Granted: 1960-05-24
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Joisel Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:26
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/04; B02C17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US405810A
Cited
DE661870C
Cited
FR401833A
Cited
US1144272A
Cited
US1951823A
Cited
GB436534A
Cited
DE660412C
Cited
GB527522A
Cited
US2209344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |