Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 4772329 | Aqueous dispersions based on cellulose nitrates, a process for their production and their use as quick-hardening coatings Aqueous coating agent dispersions comprising A. from 3 to 30% by weight of cellulose nitrate, B. from 10 to 50% by weight of at least one liquid prepolymer, which is optionally emulsifiable in water even in the absence of emulsifier, which contains from 0.01 t... | 09/20/1988 |
| 4421565 | Thixotropic agents for organic solvent-based surface-coating compositions and surface-coating compositions containing same A thixotropic agent for organic solvent-based surface-coating compositions is the product of the reaction of a polypentaerythritol component comprising tripentaerythritol with a saturated aliphatic monocarboxylic acid component comprising acids having 20 ... | 12/20/1983 |
