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PROTOTYPES LTD

GB4 patents

Top patents by PatentIndex Score

US4826515AMay 2, 1989

Vacuum cleaning apparatus

PROTOTYPES LTD335 citations99

US4593429AJun 10, 1986

Vacuum cleaning appliance

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US4573236AMar 4, 1986

Vacuum cleaning appliances

PROTOTYPES LTD268 citations99

US4571772AFeb 25, 1986

Upright vacuum cleaning appliance

PROTOTYPES LTD201 citations99