The trademarks listed below were in class 52 at the time they were issued. At the bottom of the page is a link that will bring up a pdf of these registration certificates at the uspto. Note that around 17,000 registration certificate are missing from the uspto's site and won't be included in the pdf (any registration numbers preceded by an asterisk).

Class 52 Detergents and soaps
Reg NumberReg Date
 4436541950-01-03
 4437351950-02-07
 4437591950-02-14
 4437881950-02-28
 4439051950-04-11
 4440451950-06-20
 4441391950-08-15
 4441881950-09-05
 4441921950-09-05
 4441931950-09-05
 4443031950-11-07
 4443141950-11-14
 4443411950-11-28
 4443821951-01-02
 4444061951-02-06
 4444111951-02-20
 4444121951-02-20
 4445691951-09-25
 4445821951-10-16
 4446201951-12-25
 4446981952-06-24
 4447931953-12-29
 5192071949-12-27
 5192641949-12-27
 5192901949-12-27
pdf of above registration certificates
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