Key chain note holder with transparent housing

A note card apparatus, comprising:

• a flat, rigid note card having two opposing major surfaces, a first of said surfaces being erasable and arranged to receive handwritten notes thereon such that said notes can be erased from said first surface,
• a rigid, hollow housing having an elongated slot extending into said housing and shaped and sized to receive said note card therein,
• said hollow housing being flat and having first and second major sides so that when said note card is inserted into said slot of said housing, each of said major sides of said housing will be adjacent one of said opposing major surfaces of said note card,
• said hollow housing and said note card including cooperating locking means for locking said note card within said housing for holding said note card to resist withdrawal thereof from said housing when said note card is fully inserted into said housing, but for allowing said note card to be withdrawn from said housing by manual force after it is fully inserted into said housing,
• said note card being shaped to be insertable into said slot of housing in either of first and second orientations such that, in said first orientation, said first and second surfaces of said note card are adjacent said first and second sides of said housing, respectively, and in said second orientation, said first and second surfaces of said note card are adjacent said second and first sides of said housing, respectively,
• said note card having an outer edge which includes a grip portion for facilitating grasping said note card for pulling it out of said housing,
• one of said two major sides of said hollow housing being transparent so that when said note card is positioned in said housing, said transparent side displays an adjacent major surface of said note card therethrough and also protects any writing on said note card from accidental erasure, and
• a hole extending through said housing, said hole adapted to receive a holding ring,
• said housing having a recess extending into said housing for removably receiving an elongated writing instrument, and locking means for securely locking said writing instrument within said recess,
• whereby said notes can be written on said writing surface when said note card is out of said housing and said note card can be inserted into said slot so that said writing surface is adjacent said transparent side so that said notes are visible therethrough, and said note card can also be inserted into said slot with said writing surface facing said opaque side so that said notes are hidden from view for security, and said housing protects said notes from accidental erasure when said note card is received therein.