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Patents > Tech fields : LTA or lift & Filing date: 1900 - 1909 & Patent agent: None & First filing: Yes

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Inventors:
None (6) · Walter Hermann von Mach (4) · Burt Jackson Pressey (3) · Johann Schütte (2) · Johannes Schilling (2) · Hermann Gothan (2) · Franz Bollhorn (2) · Firmin Bousson (2) · Ottavio Ricaldoni (2) · Joel Trout Rice (2)
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Applicant person:
None (23) · Burt Jackson Pressey (3) · Walter Herrmann von Mach (2) · Johannes Schilling (2) · Hermann Gothan (2) · Ottavio Ricaldoni (2) · Franz Bollhorn (2) · Firmin Bousson (2) · Joel Trout Rice (2) · Johann Schütte (2)
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None (53)
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National tech categories:
None (24) · FR 6.4 (13) · USPC 244/30 (11) · HU V/h (8) · USPC 244/97 (7) · DE 77h (7) · USPC 244/26 (7) · DE 77h.4 (6) · USPC 244/28 (6) · DE 77h.3 (5) · AT 77d (5) · USPC 244/127 (4) · USPC 244/73R (4) · USPC 244/72 (4) · USPC 244/25 (4) · USPC 244/51 (4) · DE 77h.15 (4) · USPC 244/52 (4)
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Citations from after 1930:
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