Haemacytometer
date: label: date made
content: 1936-1946
label: patent date
content: 1935-03-19
name: label: maker
content: Spencer Lens Company
notes: label: Description
content: An accompanying paper reads “SPENCER / Bright Line Haemacytometer / Patent No. 1,994,483 / Canadian Patent No. 356308 - 1936 / Made in U.S.A.” Other inscriptions read “X50,007 / Serial Number 183019 / Inspected By E. V. / Date 12-11-46. Patented in US: March 19, 1935.” The referenced patent was issued to Harry G. Ott (1894-1950), an accomplished optical engineer employed by the Bausch & Lomb Optical Co.
label: Description
content: Ref: Harry G. Ott, “Optical Article and Method of Making Same,” U.S. Patent 1,994,483 (March 10, 1935), assigned to Spencer Lens Co.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Buffalo
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Donated by St. Louis Medical Society through Harry O. Cole & Gordon R. Garrett
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1977.0808.017
label: accession number
content: 1977.0808
label: catalog number
content: 1977.0808.017
objectType: label: Object Name
content: Kit, Testing, Blood
label: Object Name
content: blood testing kit
label: Object Name
content: hemacytometer
label: Object Name
content: diagnostic
label: Other Terms
content: Kit, Testing, Blood; Diagnostic Medicine
physicalDescription: label: Measurements
content: overall: 3/4 in x 5 3/4 in x 3 1/8 in; 1.905 cm x 14.605 cm x 7.9375 cm