This is the group of individuals that put together Patent Rank, they're interesting people.Patent Ranking — The Patent Rank Badge
Patent Rank evaluates individual patents based on several criteria, computes their value, and then delivers a Patent Rank Badge, which is unique to Patent Rank and is a feature no other online patent services offer.Patent for a washing cloth
Have a similar invention to the washing cloth? This one was patented in 1975 and is listed in patent databases under number 3,902,299.Fast Easy Patent Data
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Patent Rank enables users to search tons of patents and their basic data for free.