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Publication of BE720409RpublicationCriticalpatent/BE720409R/fr
E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B35/00—Applications of measuring apparatus or devices for track-building purposes
G—PHYSICS
G06—COMPUTING OR CALCULATING; COUNTING
G06G—ANALOGUE COMPUTERS
G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
G06G7/68—Analogue computers for specific processes, systems or devices, e.g. simulators for civil engineering structures, e.g. beam, strut, girder, elasticity computation
E—FIXED CONSTRUCTIONS
E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
E01B2203/00—Devices for working the railway-superstructure
E01B2203/16—Guiding or measuring means, e.g. for alignment, canting, stepwise propagation
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Architecture
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Structural Engineering
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Computer Hardware Design
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Physics & Mathematics
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Theoretical Computer Science
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Mathematical Physics
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General Physics & Mathematics
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Color, Gradation
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Producing Shaped Articles From Materials
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Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements
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