Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 4337966 | Folding utility cart A folding cart having a flexible container suspended from a rectangular rigid frame forming the mouth of the container. The rectangular frame is supported on the axle between two wheels by upright members pivotally connected to the two sides of the rectan... | 07/06/1982 |
| 4268049 | Shopping cart A shopping cart provides a carrier adapted for carrying items, which carrier is pivotally mounted to a support. Further, a wall structure is provided, also pivotally mounted to the support, which wall structure and carrier can be pivoted to a position to ... | 05/19/1981 |
| 4261596 | Folding utility cart A sturdy metal folding cart is useful as a garden wheelbarrow, a wheeled dustpan, and as a stable stand for debris bags of different sizes. The cart is constructed for compact packaging and ease of assembling by a purchaser, as well as ease of folding and... | 04/14/1981 |
| 4221402 | Garment bag attachment for portable luggage carrier A garment bag attachment is removably mounted on a portable luggage carrier. The luggage carrier includes a base and a handle assembly extending upwardly from the base. The handle assembly includes a pair of spaced-apart handle members and a cross brace c... | 09/09/1980 |
| 4040644 | Refuse bag carrier The present invention relates to simple, convenient, versatile and inexpensive means for collecting refuse of any character which tends to accumulate inside or outside a residence or other building, and depositing it in an appropriate location for disposa... | 08/09/1977 |
| 3992038 | Shopping cart A shopping cart which folds from a bag-supporting condition into a noteworthy compact storage condition in response to pivotal closing movement of its handle. Specifically, the pivotal traverse of the handle produces a scissors-type closing movement in th... | 11/16/1976 |
