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US3553905A Expired / Lapsed US ⏱️ 0.0 years remaining

Tool structures

Assignee: Individual
•
Filing: 1967-10-10
•
Granted: 1971-01-12
•
Expires: 1987-10-10
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Abstract

Abstract COMPOSITE CUTTING AND GRINDING TOOL STRUCTURES HAVING A METAL BASE AND A HARD SURFACE MATERIAL DISPOSED ALONG THE CUTTING PORTION OF THE TOOL. IN ONE FORM, A MULTITUDE OF ABRASIVE BITS FORM AN INTEGRAL PORTION OF THE SURFACE OF THE TOOL TOGETHER WITH METAL OF THE TOOL BASE INTERSPERSED BETWEEN THE BITS. THE BITS MAY SERVE TO PROVIDE BOTH THE ACTIONS OF ABRADING WORK AND RESISTING ABRASION OF THE TOOL BY THE WORK. THE BITS MAY ALSO SERVE PRIMARILY TO PROVIDE A HARD SURFACE ADJACENT OR ALONG ONE OR MORE CUTTING EDGES OF TH TOOL TO RESIST WEAR DURING THE CUTTING ACTION AND/OR TO FINISH OR ABRADE THE WORK SURFACE MACHINED BY THE CUTTING EDGE OF THE TOOL. IN ANOTHER FORM, A HARD SURFACING MATERIAL IS APPLIES AS A COATING ALONG OR ADJACENT TO THE CUTTING EDGE(S) OF THE TOOL OR ON THE ABRASIVE BITS TO RESIST EROSION AND SERVE TO LUBRICATE THE CUTTING SURFACES DURING USE.

Inventors

  • 👤 Jerome H Lemelson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:15
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/148; B24; B24D; B24D5/00; B24D5/12; B24D7/00; B28; B28D; B28D1/00; B28D1/02; B28D1/12; B28D1/121; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/26; Y10T407/27

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-01-11 1974-07-13 1975-01-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-11 1978-07-13 1979-01-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-11 1982-07-13 1983-01-12 $7700.00 Window Closed / Lapsed

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