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combined with vibrating or other additional compacting means
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Industry
CPC
B28B21/34
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B28
Stoneworking
B28B
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL
B28B21/00
Methods or machines specially adapted for the production of tubular articles
Current Industry
B28B21/34
combined with vibrating or other additional compacting means
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Patents Grants
last 30 patents
Information
Patent Grant
Concrete pipe machine
Patent number
4,600,373
Issue date
Jul 15, 1986
GHA Lock Joint, Inc.
Harold V. Swanson
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Method of making prestressed concrete poles, tubes, and support col...
Patent number
4,247,516
Issue date
Jan 27, 1981
Top Roc Precast Corporation
Burton D. Morgan
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
3304591
Patent number
3,304,591
Issue date
Feb 21, 1967
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
3012298
Patent number
3,012,298
Issue date
Dec 12, 1961
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2965947
Patent number
2,965,947
Issue date
Dec 27, 1960
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2850784
Patent number
2,850,784
Issue date
Sep 9, 1958
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2839278
Patent number
2,839,278
Issue date
Jun 17, 1958
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2822598
Patent number
2,822,598
Issue date
Feb 11, 1958
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2735153
Patent number
2,735,153
Issue date
Feb 21, 1956
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2724582
Patent number
2,724,582
Issue date
Nov 22, 1955
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2703916
Patent number
2,703,916
Issue date
Mar 15, 1955
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2222889
Patent number
2,222,889
Issue date
Nov 26, 1940
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
2038861
Patent number
2,038,861
Issue date
Apr 28, 1936
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1979415
Patent number
1,979,415
Issue date
Nov 6, 1934
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1954904
Patent number
1,954,904
Issue date
Apr 17, 1934
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1789742
Patent number
1,789,742
Issue date
Jan 20, 1931
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1786586
Patent number
1,786,586
Issue date
Dec 30, 1930
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1579561
Patent number
1,579,561
Issue date
Apr 6, 1926
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1562551
Patent number
1,562,551
Issue date
Nov 24, 1925
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1544879
Patent number
1,544,879
Issue date
Jul 7, 1925
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
1532407
Patent number
1,532,407
Issue date
Apr 7, 1925
B28 - WORKING CEMENT, CLAY, OR STONE
Patents Applications
last 30 patents