Piezoelectric crystal apparatus

申请公布号：US2277709(A)

申请号：US19400369694

申请日期：1940.12.12

申请公布日期：1942.03.31

申请人：

BELL TELEPHONE LABORATORIES, INCORPORATED

发明人：MCSKIMIN HERBERT J.;SYKES ROGER A.

分类号：H03H9/00;H03H9/02;H03H9/19;H03H9/54;H03H9/56;H03H9/60

主分类号：H03H9/00

分解式缝纽机手提箱

发卷

鱼丸制造机

如意自动烤面包机

除草剂(追加专利)

YARN SHRINKING APPARATUS

APPARATUS FOR CONDITIONING STRAIN IN FIBER BAND

STEAM HEATING BULKY SETTER

LACTAM COMPOUND

PREPARATION OF ZINC GLYCOLATE

PREPARATION OF POLYPRENYL ALCOHOL

ZEROOPOINT DETECTOR FOR MEASURING BALANCE

DIRECT VIEWING DEVICE OF TRANSMISSION FUNCTION

OPTICAL THERMOMETER

SLIT ILLUMINATOR

DYNAMIC RANGE EXPANDER FOR MAGNETIC REPRODUCER

BACK SIDE BLOT PREVENTING DEVICE DURING DEVELOPMENT

DIRECTIONAL ANTENNA SYSTEM

ASSEMBLING METHOD FOR TELEVISION RECEIVER

HOLD DOWN DEVICE IN REACTOR FUEL EXCHANGING EQUIPMENT