`whenYear` >='-3000'
AND `whenYear` <='3000'
AND
( `whoCharName` = 'Gyrocompass ' or `whoRel` = 'Gyrocompass ' or `whereLoc` = 'Gyrocompass')
AND (`access` ='Public' )
ORDER BY `whenYear` ASC, `whenMonth` ASC , `whenDay` ASC,`eventSig` DESC
LIMIT
0
,
300

Gyrocompass's Timeline: Life, Photos, and Key Events


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1911

Elmer A. Sperry
Gyrocompass
in 1911
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303819

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