Portion of a key blade blank
United States Patent D362796

Hoffman, Anthony J. (Newington, CT)
Kearns, Robert E. (San Francisco, CA)
Application Number:
Publication Date:
Filing Date:
Corbin Russwin, Inc. (Berlin, CT)
Primary Class:
Field of Search:
D8/347, D8/348, 70/393, 70/402, 70/405-407, 70/419, 70/437
View Patent Images:
US Patent References:
D335253Key blade blankMay, 1993EizenD8/347
D328856Portion of a key blade blankAugust, 1992Best et al.D8/347
4964288Locking device and reversible keyOctober, 1990Braun et al.70/406
D286854Key for door locksNovember, 1986Fane et al.D8/347
4608842Lock and key systemSeptember, 1986Tietz70/419
D278880Key blankMay, 1985WidenD8/347
3499304FLAT KEYS FOR CYLINDER LOCKSMarch, 1970Naujoks70/406
2803959Cylinder lockAugust, 1957Schlage70/347

Foreign References:
DK88591February, 1960704/6X
DE2740416March, 1979
Other References:
Ilco Unican Corp. Catalogue No. 60R (1984) Key Blank #A1170B (p. 2).
Ilco Unican Corp. Catalogue No. 60R (1984) Key Blank #1054F (p. 13).
Emhart Corporation Drawing Warding Data--Sections 59AC, 62AC; 76D1; 59C1; 62C1; 59B1; 62B1; 59B, 62B, 59D1, 62D1; 59AB, 62AB; 59A, 62A, 59A1, 62A1; 59A2; 62AC, 59AD, 62AD; 59B2, 62B2; 59BD, 62BD; 59C2, 62C2; 59CD, 62CD; 59D2, 62D2; 59D, 62D; 59C, 62C.
Primary Examiner:
Vinson, Brian N.
Attorney, Agent or Firm:
Darby & Darby
1. The ornamental deisng for a portion of a key blade blank, as shown anddescribed.


FIG. 1 is a front elevational view of our new design of a portion of a key blade blank;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.