URL details: uspto.report/patent/app/20210003227

URL title: Three position check valves for use with vacuum jammed film envelopes Pilotte; Mary ; &nbsp et al. [Lanczy; Geza]
URL keywords: Patent, Application, Three position check valves for use with vacuum jammed film envelopes
URL last crawled: 2022-06-12
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2022-04-13
US Patent 2021/0003227