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Assembly of straight duct and transitions
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Patent number 4,424,618
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Issue date Jan 10, 1984
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Universal conveyor
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Patent number 4,422,543
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Issue date Dec 27, 1983
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Convertible back pack frame
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Patent number 4,286,739
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Issue date Sep 1, 1981
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Potomac Applied Mechanics
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Philip B. Silcott
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A45 - HAND OR TRAVELLING ARTICLES
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-
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Steel stock cutting
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Patent number 4,265,156
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Issue date May 5, 1981
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Fastening using air hammer
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Patent number 4,257,548
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Issue date Mar 24, 1981
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Angle iron cutting
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Patent number 4,255,993
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Issue date Mar 17, 1981
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Formation of radius elbows and O.G. sets
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Patent number 4,210,090
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Issue date Jul 1, 1980
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Fastening with two-piece fasteners
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Patent number 4,184,357
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Issue date Jan 22, 1980
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Two-piece fastener air hammer
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Patent number 4,183,239
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Issue date Jan 15, 1980
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Angle iron cutting
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Patent number 4,170,910
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Issue date Oct 16, 1979
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Bracket mount for lock box
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Patent number 4,170,324
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Issue date Oct 9, 1979
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B60 - VEHICLES IN GENERAL
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Locking mechanism
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Patent number 4,120,181
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Issue date Oct 17, 1978
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Potomac Applied Mechanics, Inc.
-
James H. Stubbings
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B60 - VEHICLES IN GENERAL
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Assembly of straight duct and transitions
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Patent number 4,111,143
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Issue date Sep 5, 1978
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Potomac Applied Mechanics, Inc.
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James Henry Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Angle iron cutting
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Patent number 4,106,380
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Issue date Aug 15, 1978
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Potomac Applied Mechanics, Inc.
-
James Henry Stubbings
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Sheet metal cutting
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Patent number 4,069,583
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Issue date Jan 24, 1978
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Potomac Applied Mechanics, Inc.
-
James Henry Stubbings
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Lock box
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Patent number 4,058,993
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Issue date Nov 22, 1977
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Potomac Applied Mechanics, Inc.
-
James H. Stubbings
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B60 - VEHICLES IN GENERAL
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Band and saber saw arrangement
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Patent number 4,055,102
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Issue date Oct 25, 1977
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Potomac Applied Mechanics, Inc.
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James Henry Stubbings
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Insulation cutter
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Patent number 4,050,336
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Issue date Sep 27, 1977
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Potomac Applied Mechanics, Inc.
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James H. Stubbings
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Continuous welder
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Patent number 4,051,342
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Issue date Sep 27, 1977
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Potomac Applied Mechanics, Inc.
-
James Henry Stubbings
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Sheet metal cutting
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Patent number 4,047,457
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Issue date Sep 13, 1977
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Potomac Applied Mechanics, Inc.
-
James Henry Stubbings
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR