Assignee
YES JOHNSON
TW·4 granted patents·32 citations·filing 1985–1988
Top patents by PatentIndex Score
4 records- 0145US4674538ADevice for regulating water flow in a water filterYES JOHNSON·Filed 1985·Granted Jun 23, 1987·15 cites·5 claims
- 0243US4851275ACovering used to protect water conditions of nursery pool from damage by acid rain and extraordinary temperaturesYES JOHNSON·Filed 1988·Granted Jul 25, 1989·11 cites·3 claims
- 0329US4744897ASweeper type apparatus for clearing the deposition formed on the bottom of a pondYES JOHNSON·Filed 1986·Granted May 17, 1988·5 cites·7 claims
- 0424US4666601AWater filterYES JOHNSON·Filed 1985·Granted May 19, 1987·1 cites·11 claims
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