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FR437720A - Air pump - Google Patents

Air pump

Info

Publication number
FR437720A
FR437720A FR437720DA FR437720A FR 437720 A FR437720 A FR 437720A FR 437720D A FR437720D A FR 437720DA FR 437720 A FR437720 A FR 437720A
Authority
FR
France
Prior art keywords
air pump
pump
air
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
Other languages
French (fr)
Inventor
John Thomas Drury
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
Application granted granted Critical
Publication of FR437720A publication Critical patent/FR437720A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR437720D 1910-12-16 1911-12-15 Air pump Expired FR437720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB437720X 1910-12-16

Publications (1)

Publication Number Publication Date
FR437720A true FR437720A (en) 1912-04-29

Family

ID=1479307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR437720D Expired FR437720A (en) 1910-12-16 1911-12-15 Air pump

Country Status (1)

Country Link
FR (1) FR437720A (en)

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