Patent US-1877-200951

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  • Inventor location: New York county, NY (FIPSloc=36061, imputed by HistPat)
  • Tech class CPC B64C11/00: Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
  • Half assigned to Ritterband
  • Strengthening of propeller blades in water; no mention of aero application

Sources


Year filed 1877
Year granted 1878
Office US
Patent number 200951
Inventors Simon Tragheim
Inventor country US
Inventor location
Applicant person Simon Tragheim
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Improvement in screw-propellers
English title Improvement in screw-propellers
Tech fields marine propellers
Filing date 1877-09-29
Full specification filed date
Application number
Grant date 1878-03-05
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? 0.5
Serial number 200951
Patent agent
Assigned to David S. Ritterband
National tech categories
IPCs
CPCs CPC F01D5/06, CPC B64C11/00
Family year 1878
First filing? 1
Cites these patents
Citations from after 1930 1
Application ID 45900640
INPADOC family ID
Number of text pages 1
Number of diagram pages 1
Number of figures 3
Number of claims 3