Patent AT-1902-6911

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Sources

(Although this device has applications within other contexts, such as mining, the "Luft" context is specifically mentioned at the end of the above original.)

  • Inventor location: Oberaltstadt near Trautenau (Böhmen)
  • Inventor occupation:
Year filed 1901
Year granted 1901
Office AT
Patent number 6911
Inventors Ignaz Etrich
Inventor country AT
Applicant person Ignaz Etrich
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Athmungshelm
English title Helmet facilitating respiration
Tech fields
Filing date June 13, 1901
Full specification filed date
Application number ATD6911
Grant date October 15, 1901
Granted? Yes
Publication date March 10, 1902
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories AT 30
IPCs
CPCs
Family year
First filing? No
Number of citations
Cited by
Application ID
INPADOC family ID
Number of text pages 3
Number of diagram pages 1
Number of figures 4
Number of claims 2