4. Communications: electrical
  5. Underwater

James P. Hollen

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Apparatus for heating the air and suit of a free swimming diver

Stoves and furnaces – Body warmers
Patent

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Dive profile recorder

Communications: electrical – Underwater
Patent

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Front end loader retractable attachment

Excavating – Combined or convertible – Combined with subsoiler
Reexamination Certificate

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Profile ID: LFUS-PAI-P-539226

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