9 Utility Patents
#127 in Stillwater, MN
#7,336 in Minnesota
#224,097 in US
#456,856 in the World
Forward Citations = 309
Company Filing History:
United States Filter Corporation
Johnson Filtration Systems
Weatherford/lamb, Inc.
4. 1 out of 3
Wheelabrator Engineered Systems Inc.
5. 1 out of 1
Wheelabrator Water Technologies Inc.
where one patent can have more than one assignee
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