Manhattan type 2721 full-wave rectifier tube
date: label: date made
content: 1927
name: label: maker
content: Manhattan Electrical Supply Co.
notes: label: Description (Brief)
content: A high voltage rectifier in original box. A 4-pin plastic base with tipped S-shaped envelope. Molded on base: "[M logo] Manhattan / Patent.Pending"; stamped on envelope: "10222". Printed on box: "10222 / One / Number 2721 / Manhattan / Full Wave / High Voltage / Rectifier / Tube / Patent 1628045 / Rated Output / 90 Mils at 470 Volts / 45 [ditto marks] 800 [volts] / Made in U.S.A. by / Manhattan / Electrical Supply Co., Inc. / New York, N.Y. / Plate 127 Printed in U.S.A." Refers to US Patent 1628045, Electronic Discharge Device, issued 10 May 1927 to William F. Hendry, assigned to Manhattan Electrical Supply Co. Reference: https://www.radiomuseum.org/tubes/tube_2721.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323296
label: catalog number
content: 323296
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: rectifier
physicalDescription: label: Measurements
content: tube: 5 3/4 in x 2 1/4 in; 14.605 cm x 5.715 cm
label: Measurements
content: box: 7 in x 3 5/8 in x 4 in; 17.78 cm x 9.2075 cm x 10.16 cm