US3305274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining machine tool and holder
Assignee: Kennametal Inc
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Filing: 1964-12-14
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Granted: 1967-02-21
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert D Goodfellow
- 👤 Thomas J Kniff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:33
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN COMBINATION, FOR USE AS A MINING TOOL; A CUTTER BIT COMPRISING A BAR-LIKE BODY HAVING AN OUTER END AND AN INNER END AND A FORWARD SIDE AND A REARWARD SIDE, A HARD CUTTING ELEMENT ON THE FORWARD SIDE OF THE OUTER END OF SAID BODY, A SUBSTANTIALLY RECTANGULAR NOTCH OF SUBSTANTIAL DIMENSIONS IN THE INTERMEDIATE PORTION OF THE REARWARD SIDE OF SAID BODY, A HOLDER BLOCK FOR SUPPORTING SAID CUTTER BIT HAVING ONE PORTION ENGAGING THE INNER END OF SAID BODY AND EXTENDING ALONG THE REARWARD SIDE OF SAID BODY TO SAID NOTCH AND HAVING A SUBSTANTIALLY REC-
Claim 2
Dependent Claim
99 words
IN COMBINATION, FOR USE AS A MINING TOOL; A CUTTER BIT COMPRISING A BAR-LIKE BODY HAVING AN OUTER END AND AN INNER END AND A FORWARD SIDE AND A REARWARD SIDE, A HARD CUTTING ELEMENT ON THE FORWARD SIDE OF THE OUTER END OF SAID BODY, A SUBSTANTIALLY RECTANGULAR NOTCH OF SUBSTANTIAL DIMENSIONS IN THE INTERMEDIATE PORTION OF THE REARWARD SIDE OF SAID BODY, A HOLDER BLOCK FOR SUPPORTING SAID CUTTER BIT HAVING ONE PORTION ENGAGING THE INNER END OF SAID BODY AND EXTENDING ALONG THE REARWARD SIDE OF SAID BODY TO SAID NOTCH AND HAVING A SUBSTANTIALLY REC-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |