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  • CPC
  • E21C25/30
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C25/00Cutting machines

Current Industry

E21C25/30Chain guides
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Tunnel excavation apparatus
    • Patent number 5,382,114
    • Issue date Jan 17, 1995
    • Trevi S.P.A.
    • Davide Trevisani
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Cutting machine nose shoe
    • Patent number 4,258,957
    • Issue date Mar 31, 1981
    • Joy Manufacturing Company
    • Ralph W. Mitchell
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    3910709
    • Patent number 3,910,709
    • Issue date Oct 7, 1975
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    3741609
    • Patent number 3,741,609
    • Issue date Jun 26, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2937015
    • Patent number 2,937,015
    • Issue date May 17, 1960
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    2811342
    • Patent number 2,811,342
    • Issue date Oct 29, 1957
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    2730347
    • Patent number 2,730,347
    • Issue date Jan 10, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2728566
    • Patent number 2,728,566
    • Issue date Dec 27, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2707627
    • Patent number 2,707,627
    • Issue date May 3, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2561657
    • Patent number 2,561,657
    • Issue date Jul 24, 1951
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2551510
    • Patent number 2,551,510
    • Issue date May 1, 1951
    • E04 - BUILDING
  • Information Patent Grant

    2533572
    • Patent number 2,533,572
    • Issue date Dec 12, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2477097
    • Patent number 2,477,097
    • Issue date Jul 26, 1949
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2364045
    • Patent number 2,364,045
    • Issue date Dec 5, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2304505
    • Patent number 2,304,505
    • Issue date Dec 8, 1942
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    2289123
    • Patent number 2,289,123
    • Issue date Jul 7, 1942
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2156732
    • Patent number 2,156,732
    • Issue date May 2, 1939
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    2109082
    • Patent number 2,109,082
    • Issue date Feb 22, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2109081
    • Patent number 2,109,081
    • Issue date Feb 22, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2096997
    • Patent number 2,096,997
    • Issue date Oct 26, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2068985
    • Patent number 2,068,985
    • Issue date Jan 26, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2068070
    • Patent number 2,068,070
    • Issue date Jan 19, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1932187
    • Patent number 1,932,187
    • Issue date Oct 24, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1931560
    • Patent number 1,931,560
    • Issue date Oct 24, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1884696
    • Patent number 1,884,696
    • Issue date Oct 25, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1857376
    • Patent number 1,857,376
    • Issue date May 10, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1585916
    • Patent number 1,585,916
    • Issue date May 25, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1585917
    • Patent number 1,585,917
    • Issue date May 25, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1549654
    • Patent number 1,549,654
    • Issue date Aug 11, 1925
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1543516
    • Patent number 1,543,516
    • Issue date Jun 23, 1925
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...

Patents Applicationslast 30 patents

  • Information Patent Application

    Undercutter Device
    • Publication number 20110083346
    • Publication date Apr 14, 2011
    • New Dymax, Inc.
    • Dennis Clasen
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES