US3452938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jaw-type crusher
Assignee: Kennecott Corp
•
Filing: 1965-05-24
•
Granted: 1969-07-01
•
Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Stanley D Michaelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:26
CPC Classifications
B; B02; B02C; B02C1/00; B02C1/02; B02C1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL294972A
Cited
DE1013248B
Cited
DE1100431B
Cited
US2999651A
Cited
DE1109986B
Cited
DE1134873B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |