Adapter for telephone receivers having a small stray magnetic field
US T880003 I4
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DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16. 1969. 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading or each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oilice makes no assertion as to the novelty ot the disclosed subject matter.
PUBLISHED NOVEMBER 24, 1970 T880,003 ADAPTER FOR TELEPHONE RECEIVERS HAVING A SMALL STRAY MAGNETIC FIELD Gary L. Spahn, Indianapolis, Ind., assignor to Bell Telephone Laboratories, Incorporated, Murray Hill and Berkeley Heights, N.J., a corporation of New York Filed May 5, 1969, Ser. No. 821,692 Int. Cl. H04r 25/20 US. Cl. 179--1 2 Sheets Drawing. 7 Pages Specification llllllllllllllllllt-(Z 1 65 Filed May 5, 1969 PAHN T80003 2 Sheets-Sheet 1 F/GJ W 5O 5i u 22 65 -'I :if [I if FF/G. 2A
l/VVENTOR G. L SPAH/V ATTORNEY ADAPTER FOR TELEPHONE RECEIVERS HAVING A SMALL STRAY MAGNETIC FIELD Filed May 5. 1969 2 Sheets-Sheet 2