USD312901SExpiredUtility

Electric vacuum cleaner

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Assignee: HITACHI LTDPriority: Sep 26, 1988Filed: Mar 27, 1989Granted: Dec 11, 1990
Est. expirySep 26, 2008(expired)· nominal 20-yr term from priority
Inventors:Tomoyuki MiyataKohichi HasegawaMasao SunagawaAkira IwaoNaruhiko Suzuki
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PatentIndex Score
6
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8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an electric vacuum cleaner, as shown.

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