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 |
| 4462129 | Stabilized mattress border A stabilized mattress border is provided which eliminates undesirable leaning. The border defines a center compartment within which air, flotation, or spring mattress inserts may be positioned. It includes a pair of rows of pocketed coils and a flat wire ... | 07/31/1984 |
| 4449261 | Bed mattress having an improved pillow top A mattress is provided having a continuous border portion having a removable and reversible pillow top fastened thereto. The border portion has a large cavity disposed therein to receptably receive a core mattress. Differing core mattresses can be inserte... | 05/22/1984 |
| 4378609 | Sofa bed with mattress longitudinally compressed for storage and method The present sofa bed includes a mattress supporting bed frame which is operable to longitudinally compress a portion of the mattress when the bed frame is moved to a folded and storage seat position. The bed frame or telescoping section which permits long... | 04/05/1983 |
