USD251156SExpiredUtility

Protective helmet

77
Assignee: SCHLEICHER WOLFRAMPriority: May 19, 1976Filed: Nov 17, 1976Granted: Feb 27, 1979
Est. expiryMay 19, 1996(expired)· nominal 20-yr term from priority
Inventors:Wolfram SchleicherCorina Piech
77
PatentIndex Score
19
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a protective helmet, as shown.

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