References (to: PTR quartz-clock, CFQ quartz-clock, Rehbock, early BCD counters)

1.      Boersma (et al), Aspecten van tijd, Kampen The Netherlands 1991, p. 14-16

2.      Petzhold, Geschichte und Emanzipation, Frankfurt 1999,  p. 565

1.             Cady, Piezoelectricity, New York - London 1946   

2.             XC, 1506 and XCI, 294

3.             Hurwic, Pierre Curie, Paris 1995, p. 291

4.             Oeuvres de Pierre Curie, Montreux 1984, p. 6-21

5.             Re 17,245 - 17,246 - 17,247 and 17,355 - 17,356 - 17,357 - 17,358 - 17,359.

6.             Giebe & Scheibe, ETZ, 1926, p. 380-      

7.             T & T Z.sch.f. HF techn. 4.II.1929,  p. 77-91 

8.             Physikalische Zeitschrift 33 Jahrgang 1932 Heft 21 , p. 835-841   

9.             Hochrequenztechnik und Elektroakustik, 43, 1934 Heft 2, p. 32-47

10.         Wissenschaftliche Abhandlungen der Physikalsichen Reichsanstalt, Bd 20 Heft 2,1936

11.         Ann. France d. Chronometer, 1934, p. 221

12.         Rohde, Fortschritte der Hochfrequenztechnik, Leipzig 1945, p. 246

13.         Idem

15a    The first commercial primary frequency standard was the Class C-21-H brought out by General Radio Company in 1928. GR Experimenter Vol. XI No.1, June 1936, p. 13

14.         100 Years of Radio, IEE London 1995, p. 76-82

15.         Evolution of Modern Electronics IC February 1999, not yet issued

16.         DRP patent Class 83b Group 1 03

17.         Rohde, ENT 1940

18.         German Quartz clocks, BIOS report No. 1316, p. 6

19.         Fax message Ludwig Mooser 29 December 1999 

20.         FIOS report No. 1316, p. 4-5

21.         BIOS report 1316, p. 2

22.         Fortschritte der Hochfrequenztechnik, volume 2, Leipzig 1945, p. 253-259

23.         Idem  p. 254

24.         Idem p.262-263

25.         Awender and Bussman and Kühnhold (W) worked in this field as well (Cady, p. 506).

26.         Awender, Frequenzstabilisierung im Ultrakurzwellengebiet, FTM, 1937 Heft 10, p. 302-306

27.         FIAT =  Field Information Agency, Technical

28.         Filed: T 54 593 VIII, date unknown, Auszüge Deutscher Patent-Anmeldungen Bnd 1, p. 273

29.         Bios Final report 1316

30.         CIOS file No. XXX-36, p. 3

31.         E-mail 07-11-1999

Consider also: Allied post war investigations

Back to: BCD counter

Back to: CFQ Quartz-clock

Back to: Radar test-gear Rehbock

Back to: PTR quartz-clock