Brevetti   Gran Bretagna  

Patent:GB189503186

Brevetto:	GB 189503186
Titolo:	Improvements in Planimeters, and Appliances to be employed therewith
Data:	20.07.1895
Luogo:	Richmond, Virginia, USA
Nazione:	Gran Bretagna
Persona:	Willis, Edward (P)
Ditta:
Link interni:	Planimeter, Improved Willis Planimeter
Keywords:
Link al brevetto: (without guarantee)	GB189503186

Aus der Patentschrift GB189503186

"My invention relates to planimeters, such as are used for measuring areas, and consists in improvements in the construction of such planimeters, and in appliances whereby the mean effective pressure, and horse-power of a steam engine, can be read from an indicator diagram, without requiring calculation." (Aus der Patentschrift)

• DATUM: 20.07.1895
• TITEL: Improvements in Planimeters, and Appliances to be employed therewith.
• PERSON: WILLIS EDWARD JONES US