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Letord Emile: Spring suspension device for indicating and registering instruments.. Letord Emile, August 7, 1919: GB130393-A (2 worldwide citation)

130,393. Letord, E. April 14, 1917, [Convention date]. Mounting and supporting indicating and recording apparatus. - In a spring support for automatic indicating and recording instruments, e.g. those employed upon motor-vehicles and aircraft. a series of spiral springs. H are fixed at one end to lug ...


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Letord Emile: Strengthening and squaring plates applicable to frameworks of aerial navigation machines.. Letord Emile, August 7, 1919: GB130392-A (1 worldwide citation)

130,392. Letord, E. April 4, 1917, [Convention date]. Framework.-Aircraft framework is strengthened at sections where cross-bracing is undesirable by flanged metal plates d having lightening- holes k and holes j appropriate to the use made of the section.


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