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Pittsburgh-Des Moines Corporation
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Pittsburgh, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Liquid nitrogen distribution system
Patent number
4,625,521
Issue date
Dec 2, 1986
Pittsburgh-Des Moines Corporation
John C. Murphy
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Multi-purpose elevated water storage facilities
Patent number
4,513,547
Issue date
Apr 30, 1985
Pittsburgh-Des Moines Corporation
John O. Cliff
E04 - BUILDING
Information
Patent Grant
Multi-purpose elevated water storage facility
Patent number
4,486,988
Issue date
Dec 11, 1984
Pittsburgh-Des Moines Corporation
Clarence H. Myers
E04 - BUILDING
Information
Patent Grant
Joint for space frames
Patent number
4,474,490
Issue date
Oct 2, 1984
Pittsburgh-Des Moines Corporation
George C. Harper
E04 - BUILDING
Information
Patent Grant
Combined water storage tank and building
Patent number
D275306
Issue date
Aug 28, 1984
Pittsburgh-Des Moines Corporation
James M. Edwards
D23 - Environmental heating and cooling
Information
Patent Grant
Combined water storage tank and building
Patent number
D275307
Issue date
Aug 28, 1984
Pittsburgh-Des Moines Corporation
James M. Edwards
D23 - Environmental heating and cooling
Information
Patent Grant
Combined water storage tank and building
Patent number
D275308
Issue date
Aug 28, 1984
Pittsburgh-Des Moines Corporation
James M. Edwards
D23 - Environmental heating and cooling
Information
Patent Grant
Removable condensate collector for elevated water storage facilities
Patent number
4,450,855
Issue date
May 29, 1984
Pittsburgh-Des Moines Corporation
Richard E. Hills
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Method of erecting an elevated tank using formwork
Patent number
4,403,460
Issue date
Sep 13, 1983
Pittsburgh-Des Moines Corporation
Richard E. Hills
E04 - BUILDING
Information
Patent Grant
Field adjustable seal
Patent number
4,402,422
Issue date
Sep 6, 1983
Pittsburgh-Des Moines Corporation
Harold F. Honath
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Secondary seal for floating roof storage tanks
Patent number
4,339,052
Issue date
Jul 13, 1982
Pittsburgh-Des Moines Corporation
Richard E. Hills
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Combined water storage tank and building
Patent number
D265226
Issue date
Jun 29, 1982
Pittsburgh-Des Moines Corporation
J. Keith Carlat
D23 - Environmental heating and cooling
Information
Patent Grant
Spill condition venting system
Patent number
4,327,554
Issue date
May 4, 1982
Pittsburgh-Des Moines Corporation
Ulhas S. Patil
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Removable condensate collector for elevated water storage facilities
Patent number
4,313,457
Issue date
Feb 2, 1982
Pittsburgh-Des Moines Corporation
John O. Cliff
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Protection ring for limiting the width of cracks in a storage tank...
Patent number
4,308,967
Issue date
Jan 5, 1982
Pittsburgh-Des Moines Corporation
Richard A. Vater
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Strut for space frames
Patent number
4,297,825
Issue date
Nov 3, 1981
Pittsburgh-Des Moines Corporation
George C. Harper
E04 - BUILDING
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Trademark
last 30 trademarks
Information
Trademark
73310472 - PDM
Serial number
73310472
Registration number
1206940
Filing date
May 15, 1981
Pittsburgh-Des Moines Corporation
6 - Common metals and their alloys
Information
Trademark
73310473 - PDM CORPORATION
Serial number
73310473
Registration number
1206941
Filing date
May 15, 1981
Pittsburgh-Des Moines Corporation
6 - Common metals and their alloys