Education and demonstration – Geography – Map or terrain model
Patent
1986-01-27
1987-08-11
Grieb, William H.
Education and demonstration
Geography
Map or terrain model
273157R, G09B 2506, A63F 912
Patent
active
046858849
ABSTRACT:
A multitude of parts of three-dimensional shape have full edges and also edge segments adapted for abutment with like edges and edge segments of other parts. The parts additionally include non-abutting irregular or curved edges which may represent terrain contour lines or the bank of a body of water. Inclined areas on the parts are adjacent the irregular or curved edges and represent sloped terrain which is continuous with like inclined areas on other abutting parts. The inclined area of a part may be dispensed with to provide a vertical surface to simulate an escarpment.
REFERENCES:
patent: 964065 (1910-07-01), Snedeker
patent: 1213064 (1917-01-01), Bjornstad
patent: 1893944 (1933-01-01), Johnson
patent: 2751706 (1956-06-01), Metal
patent: 3025626 (1962-03-01), Schumacher
patent: 3981506 (1976-09-01), Daniel et al.
patent: 4192083 (1980-03-01), Rebbeck
Givnan, Jr. James D.
Grieb William H.
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