Patent US-1878-205319

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Use of vacuum to ascend and descend without wasting gas

  • Inventor location: Waltham, MA, Middlesex county, MA (FIPSloc=25017, imputed by HistPat)

Sources


Year filed 1878
Year granted 1878
Office US
Patent number 205319
Inventors James Tracy
Inventor country US
Applicant person James Tracy
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Improvement in balloons
English title Balloon
Tech fields LTA, balloon, control
Filing date 1877-12-11
Full specification filed date
Application number
Grant date 1878-06-25
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent Munn & Co.
Assigned to
National tech categories USPC 244/125, USPC 244/97
IPCs IPC B64B1/00
CPCs CPC B64B1/00
Family year 1877
First filing? 1
Cites these patents
Citations from after 1930 6
Application ID 45908190
INPADOC family ID
Number of text pages 1
Number of diagram pages 1
Number of figures 1
Number of claims 1