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Sekisui House Ltd
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Sekisui House Ltd
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Priority to JP1989111883UpriorityCriticalpatent/JPH0748746Y2/ja
Publication of JPH0350624UpublicationCriticalpatent/JPH0350624U/ja
Application grantedgrantedCritical
Publication of JPH0748746Y2publicationCriticalpatent/JPH0748746Y2/ja
Measuring three=dimensional stress in rock surrounding borehole - measuring strain deformation adjacent to slots cut into borehole wall at different angles.