PTO Wrapper PDF
Dossier Espace Google
Patent
   D271382
Priority
Sep 11 1981
Filed
Sep 11 1981
Issued
Nov 15 1983
Expiry
Nov 15 1997
Inventors
Stein, Jer…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
3
References
4
Maint.:
n/a
The ornamental design for a circular navigational rule aid, as shown as described.

FIG. 1 is a pictorial representation of a face of a circular navigational rule aid, showing my new design.

The article is a single flat sheet of conventional thickness.
INVENTORS:

Stein, Jerome E.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D317877, May 30 1989 Navigational aid
D338683, Jul 06 1990 Holding pattern rotary calculator
D773323, Aug 14 2015 GALGÅSEN AB Distance measuring apparatus
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1145020,
3747845,
3855706,
135282,
ASSIGNMENT RECORDS    Assignment records on the USPTO
Executed onAssignorAssigneeConveyanceFrameReelDoc
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule