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PatentBrief

Portfolio comparison

HURLEY MACHINE Co vs EMI Ltd

Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.

Company A

HURLEY MACHINE Co

Patents indexed

1

Year range

1910

Most recent

1910

consumer_electronicsmechanicalhome_appliances

Activity by Decade

1910s
1

Company B

EMI Ltd

Patents indexed

1

Year range

1973

Most recent

1973

biotechmedical_devicessemiconductors

Activity by Decade

1970s
1

How to use

Bookmark a comparison URL to save it. Format: /compare/companies?a=[slug]&b=[slug]. Also see patent-level comparison.