Patent GB-1910-2247

Balloon envelope made up of rubber, with red woven fabric inside, and yellow or naturally colored woven fabric outside. These colors have desired effects regarding heat conduction or heat radiation.

• Tech class CPC B64B1/58: Arrangements or construction of gas-bags; Filling arrangements
• Inventor location: Firm Josef Knapp, Dyers, Mollandgasse 28, Vienna VI, in the Austrian Empire
• Inventor signed. 140 days later, this patent was recorded as filed at the patent office. -- July 27 1910. Doesn't show why the filing wasn't recognized until December.

Patent family descending from Patent AT-1909-42853

• Patent AT-1909-42853 (English title: Balloon hull, National tech categories: AT 77d)
• Patent FR-1910-412037 (English title: Balloon envelope, Supplementary to patent: Patent AT-1909-42853, National tech categories: FR 6.4)
• Patent GB-1910-2247 (English title: An Improvement in Balloon-envelopes, Supplementary to patent: Patent AT-1909-42853)

Sources

• Neilson, 1910, Aeroplane Patents, p79
• Original patent document and bibliography entry on espacenet
• on google patents

Year filed	1910
Year granted	1911
Office	GB
Patent number	2247
Inventors	Josef Knapp
Inventor country	AT
Applicant person	Josef Knapp
Applicant firm
Applicant type	INDIV
Applicant is inventor?	1
Original title	An Improvement in Balloon-envelopes
English title	An Improvement in Balloon-envelopes
Tech fields	envelope, LTA
Filing date	1910-12-08
Full specification filed date
Application number	191002247D
Grant date	1911-02-23
Granted?	1
Publication date
Supplementary to patent	Patent AT-1909-42853
Related to aircraft?	1
Serial number
Patent agent	Herbert Haddan & Co.
Assigned to
National tech categories
IPCs	IPC B64B1/58
CPCs	CPC B64B1/58
Family year	1909
First filing?	0
Cites these patents
Citations from after 1930	0
Application ID	23594276
INPADOC family ID	11087808
Number of text pages	1
Number of diagram pages	1
Number of figures	1
Number of claims	1