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US8196041B2
(en)
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Method and system for processing information relating to active regions of a page of physical document
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US10664153B2
(en)
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Device and system for retrieving and displaying handwritten annotations
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US5105544A
(en)
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Geographical location pinpointer
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US5902113A
(en)
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Map and calculator device
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US1232290A
(en)
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Symmetroscope.
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US2411300A
(en)
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Map and location finding means therefor
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US1276657A
(en)
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Map-index.
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US2210773A
(en)
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Course and bearing indicator
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US2397063A
(en)
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Determining great circle routes
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US3528077A
(en)
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Equal space line divider and method of making the same
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CN1261916C
(en)
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Rotatable southern-northern hemisphere same-viewpoint map projection map
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US1110901A
(en)
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Device for locating places on maps.
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US2353799A
(en)
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Measuring device
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US10460420B2
(en)
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Converting spatial features to map projection
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US1389293A
(en)
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Locality-finder for maps and the like
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US1921332A
(en)
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Zigzag folding map
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US1110217A
(en)
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Chart or map.
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US2809447A
(en)
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Atlas
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US1108457A
(en)
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Guide apparatus.
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US1170537A
(en)
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Educational device.
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US1755742A
(en)
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Map finder
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US1054890A
(en)
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Educational apparatus.
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US1610413A
(en)
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Map
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US4176860A
(en)
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Street address locating aid
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US1542079A
(en)
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Location-indicating means for maps
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