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Description: | E.R. Calthrop's Patent Safety "Guardian Angel" Parachutes / E.R. Calthrop's Aerial Patents, Ltd. [1919? Brochure bears descriptive text and three photographic illustrations showing the original 1916 A1 model, the current D4 (the standard type then in use by the Air Ministry), and an airman descending from a D.H.9 aeroplane. 4p. on 1 leaf] | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | Brochure | Temporal: | 1919? | Source: | Science Museum | Creator: | E.R. Calthrop's Aerial Patents Limited | Identifier: | 1994-1064 | Go to resource |
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