US2970775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of backing crusher parts
Assignee: NORDBERG MANUFACTURIANG Co
•
Filing: 1958-05-02
•
Granted: 1961-02-07
•
Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Chapman Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/10; B02; B02C; B02C2/00; B02C2/005; Y; Y10; Y10S; Y10S238/00; Y10S238/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1396016A
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US1767421A
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US2313074A
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US2404904A
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US2575558A
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US2661500A
Cited
US2783214A
Cited
US2682515A
Cited
US2795523A
Cited
US2787426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |