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Surveying instrument
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Patent number 4,346,989
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Issue date Aug 31, 1982
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Hewlett-Packard Company
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Alfred F. Gort
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G01 - MEASURING TESTING
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Surveying instrument
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Patent number 4,335,306
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Issue date Jun 15, 1982
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Hewlett-Packard Company
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Alfred F. Gort
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G01 - MEASURING TESTING
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Reflecting lens system
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Patent number 4,108,539
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Issue date Aug 22, 1978
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Hewlett-Packard Company
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Alfred Frans Gort
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G01 - MEASURING TESTING
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3907432
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Patent number 3,907,432
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Issue date Sep 23, 1975
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G01 - MEASURING TESTING
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3895871
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Patent number 3,895,871
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Issue date Jul 22, 1975
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G01 - MEASURING TESTING
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3552866
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Patent number 3,552,866
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Issue date Jan 5, 1971
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G01 - MEASURING TESTING
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3487550
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Patent number 3,487,550
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Issue date Jan 6, 1970
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G01 - MEASURING TESTING
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3443095
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Patent number 3,443,095
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Issue date May 6, 1969
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G01 - MEASURING TESTING
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3049963
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Patent number 3,049,963
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Issue date Aug 21, 1962
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G01 - MEASURING TESTING
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3019531
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Patent number 3,019,531
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Issue date Feb 6, 1962
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G01 - MEASURING TESTING
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2976760
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Patent number 2,976,760
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Issue date Mar 28, 1961
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G01 - MEASURING TESTING
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2869238
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Patent number 2,869,238
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Issue date Jan 20, 1959
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G01 - MEASURING TESTING
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2804689
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Patent number 2,804,689
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Issue date Sep 3, 1957
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G01 - MEASURING TESTING
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2618067
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Patent number 2,618,067
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Issue date Nov 18, 1952
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G01 - MEASURING TESTING
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2132171
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Patent number 2,132,171
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Issue date Oct 4, 1938
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G01 - MEASURING TESTING
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2097218
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Patent number 2,097,218
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Issue date Oct 26, 1937
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G01 - MEASURING TESTING
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1918548
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Patent number 1,918,548
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Issue date Jul 18, 1933
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G01 - MEASURING TESTING
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1715845
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Patent number 1,715,845
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Issue date Jun 4, 1929
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G01 - MEASURING TESTING
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1575983
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Patent number 1,575,983
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Issue date Mar 9, 1926
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G01 - MEASURING TESTING
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1503758
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Patent number 1,503,758
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Issue date Aug 5, 1924
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G01 - MEASURING TESTING
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1488010
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Patent number 1,488,010
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Issue date Mar 25, 1924
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G01 - MEASURING TESTING
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1481672
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Patent number 1,481,672
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Issue date Jan 22, 1924
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G01 - MEASURING TESTING
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1448931
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Patent number 1,448,931
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Issue date Mar 20, 1923
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G01 - MEASURING TESTING
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1441635
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Patent number 1,441,635
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Issue date Jan 9, 1923
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G01 - MEASURING TESTING
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1439218
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Patent number 1,439,218
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Issue date Dec 19, 1922
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G01 - MEASURING TESTING
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1425589
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Patent number 1,425,589
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Issue date Aug 15, 1922
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G01 - MEASURING TESTING