USD254722SExpiredUtility

Instrument for sensing magnetic variations in the atmosphere

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Assignee: LAURENCE ENTPR INCPriority: Nov 21, 1977Filed: Nov 21, 1977Granted: Apr 15, 1980
Est. expiryNov 21, 1997(expired)· nominal 20-yr term from priority
Inventors:Frances Laurence
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Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an instrument for sensing magnetic variations in the atmosphere, as shown.

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