Legal status (The legal status 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 status listed.)
B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
B24D15/026—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material able to be stripped-off from a built-in delivery spool
Vorrichtung zur mechanischen Berechnung eines Integrals von der Form: ? r d a, in dem r proportional h + l�? ist und l und a die Polarkoordinaten bedeuten, insbesondere zur Ermittlung des Einflusses eines Koerpers beliebigen Querschnittes auf die Schwere