Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEORGES JEAN PAULIN CRESTIN
Original Assignee
GEORGES JEAN PAULIN CRESTIN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEORGES JEAN PAULIN CRESTINfiledCriticalGEORGES JEAN PAULIN CRESTIN
Application grantedgrantedCritical
Publication of FR511819ApublicationCriticalpatent/FR511819A/en
G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
G04F1/04—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity
G04F1/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers by movement or acceleration due to gravity by flowing-away of a prefixed quantity of fine-granular or liquid materials, e.g. sand-glass, water-clock
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Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
FR511819A1920-03-171920-03-17 Hydraulic hourly circuit breaker with automatic operationExpiredFR511819A (en)