Hydraulic and earth engineering – Drainage or irrigation
Patent
1992-08-24
1993-09-28
Taylor, Dennis L.
Hydraulic and earth engineering
Drainage or irrigation
33286, 33290, 33DIG21, 172 45, 404 841, 405118, 405268, E02B 2300
Patent
active
052482170
ABSTRACT:
A process for forming notched irrigation laterals uses a construction laser adapted to propagate radiation along a planar path, and a device that both detects the radiation and is used to manually form notches in the lateral. The laser is positioned relative to the longitudinal axis of the lateral so as to minimize optical interference during the formation process.
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patent: 4718171 (1988-01-01), Schlemmer et al.
patent: 4764051 (1988-08-01), Whitney
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