Chalk
Description
FIG. 1 is a perspective view of chalk showing my new design;
FIG. 2 is a rear elevational view;
FIG. 3 is a front elevational view;
FIG. 4 is a top plan view; and,
FIG. 5 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
D67193 | May 1925 | Epstein |
D113876 | March 1939 | Moure |
D220297 | March 1971 | Tarmu |
D269444 | June 21, 1983 | Medebach |
D269723 | July 12, 1983 | Tovey |
D284980 | August 5, 1986 | Yoshida |
D306177 | February 20, 1990 | Park |
D318293 | July 16, 1991 | Flowers |
D351620 | October 18, 1994 | Chung |
2430681 | November 1947 | Johnson |
4936585 | June 26, 1990 | Looney et al. |
566899 | May 1958 | BEX |
- Pentech International, Inc., photos of sidewalk chalk on sale prior to Feb. 8, 1994.
Patent History
Patent number: D367672
Type: Grant
Filed: Feb 8, 1995
Date of Patent: Mar 5, 1996
Assignee: Walbuck Crayon Company (Wilmington, MA)
Inventor: John J. Hahn (N. Reading, MA)
Primary Examiner: Martie Thompson
Law Firm: Bromberg & Sunstein
Application Number: 0/34,607
Type: Grant
Filed: Feb 8, 1995
Date of Patent: Mar 5, 1996
Assignee: Walbuck Crayon Company (Wilmington, MA)
Inventor: John J. Hahn (N. Reading, MA)
Primary Examiner: Martie Thompson
Law Firm: Bromberg & Sunstein
Application Number: 0/34,607
Classifications
Current U.S. Class:
Longitudinal Striation (D19/49);
Marking Instrument (D19/41);
Eraser (8) (D19/53);
Element Or Attachment (D19/54);
D21/51;
D/1127