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US4511249A
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Microprocessor-driven laser ceilometers
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GB2110501A
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Housings for underwater measuring equipment
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GB2091061A
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Microprocessor-driven laser ceilometers
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Arrangement for determining the density of natural fog in the atmosphere
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Apparatus and method for case hardening steel tools by application of heating pulses
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US4044258A
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Nuclear explosion detector with false alarm prevention
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CA958790A
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Apparatus for detecting nuclear explosions
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CA962866A
|
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Anti-flash shutter
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GB1137016A
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Apparatus for varying the radiation of electronic flash units
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US3520162A
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Circuit arrangement for liquid pressure forming sheet metal
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GB1066565A
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Improvements in methods for measuring visibility
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US3443095A
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Geodetic ranging system
|
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GB1056620A
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Method and apparatus for geodetic direction-finding
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GB973840A
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Improvements in or relating to high intensity laser systems
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GB947568A
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Light control arrangement
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GB976376A
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Device for controlling photographic exposure time
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GB939371A
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Apparatus for high-speed photography of gas flow phenomena
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GB973220A
|
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Method of and apparatus for resistance welding
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GB746030A
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Receiver for light-flash signalling system
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CA610707A
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Photosensitive receiver for light-flash signaling system
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