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Class Information
Number: 4/460
Name: Baths, closets, sinks, and spittoons > Dry closets > Field
Description: Subject matter wherein the dry closet is for use outside in an open area and the ground is used to receive the waste.

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
4642821 Self-cleaning sanitary apparatus Feb. 17, 1987
4641383 Portable toilet holding tank spout Feb. 10, 1987
4637299 Vent opening for portable building wall Jan. 20, 1987
4633536 Collapsible potty chair with disposable bag Jan. 6, 1987
4630037 Smoking violation detector Dec. 16, 1986
4621380 Toilet assemblies Nov. 11, 1986
4606080 Portable toilet Aug. 19, 1986
4581780 Precast concrete toilet with vent Apr. 15, 1986
4577351 Portable toilet cabana Mar. 25, 1986
4571758 Apparatus for vertically lifting and radially moving a person over a supporting surface Feb. 25, 1986
4504983 Toilet installation Mar. 19, 1985
4493118 Collapsible toilet shelter Jan. 15, 1985
4446585 Portable toilet May. 8, 1984
4380836 Collapsible toilet shelter Apr. 26, 1983
4305164 Portable toilet facility Dec. 15, 1981
4246665 Non-polluting toilet system Jan. 27, 1981
4228551 Baby toilet Oct. 21, 1980
4187561 Toilet riser Feb. 12, 1980
4181451 Device for disposal of animal excrement Jan. 1, 1980
4065885 Portable building structure Jan. 3, 1978

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