USD167422S - Acoustic tile - Google Patents
Acoustic tile Download PDFInfo
- Publication number
- USD167422S USD167422S US D167422 S USD167422 S US D167422S
- Authority
- US
- United States
- Prior art keywords
- acoustic tile
- acoustic
- tile
- prisland
- theodore
- Prior art date
Links
- ZFSLODLOARCGLH-UHFFFAOYSA-N Cyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 2
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Description
1952 'r. PRISLAND Des. 167,422
' ACOUSTIC TILE Filed Ma 1 1951 Wlh. ll HM m 1 W i,
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Patent d g- 9 Des. 167,422
UNITED STATES PATENT OFFICE ACOUSTIC TILE Theodore Prisland, Hillside, Ill., assignor to The Celotex Corporation, Chicago, Ill., a corporation of Delaware Application May 17, 1951, Serial No. 15,231
Term of patent 7 years (0]. DIS-2) shown- THEODORE PRISLAND.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,554,180 Trader Sept. 15, 1925 2,198,688 Williamson Apr. 30, 1940 FOREIGN PATENTS Number Country Date 625,660 Great Britain July 1, 1949
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