GB509398A - Improvements in retroactive valve apparatus - Google Patents

Improvements in retroactive valve apparatus

Info

Publication number
GB509398A
GB509398A GB34600/37A GB3460037A GB509398A GB 509398 A GB509398 A GB 509398A GB 34600/37 A GB34600/37 A GB 34600/37A GB 3460037 A GB3460037 A GB 3460037A GB 509398 A GB509398 A GB 509398A
Authority
GB
United Kingdom
Prior art keywords
retroactive
valve apparatus
valve
retroactive valve
Prior art date
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.)
Expired
Application number
GB34600/37A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB34600/37A priority Critical patent/GB509398A/en
Publication of GB509398A publication Critical patent/GB509398A/en
Priority to US289059A priority patent/US2190243A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB34600/37A 1937-12-14 1937-12-14 Improvements in retroactive valve apparatus Expired GB509398A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB34600/37A GB509398A (en) 1937-12-14 1937-12-14 Improvements in retroactive valve apparatus
US289059A US2190243A (en) 1937-12-14 1939-08-08 Retroactive valve apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34600/37A GB509398A (en) 1937-12-14 1937-12-14 Improvements in retroactive valve apparatus

Publications (1)

Publication Number Publication Date
GB509398A true GB509398A (en) 1939-07-14

Family

ID=10367660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34600/37A Expired GB509398A (en) 1937-12-14 1937-12-14 Improvements in retroactive valve apparatus

Country Status (2)

Country Link
US (1) US2190243A (en)
GB (1) GB509398A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489296A (en) * 1942-02-05 1949-11-29 Int Standard Electric Corp System for measuring frequency deviations
NL60694C (en) * 1942-04-16
BE475389A (en) * 1942-07-17

Also Published As

Publication number Publication date
US2190243A (en) 1940-02-13

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