...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 |
| 4055921 | Reglets and associated components This invention relates to an improved reglet comprising an elongate channel member defined by first and second parallel transversely spaced wall members each connected along one longitudinal edge to a connecting wall, the other longitudinal edge of each w... | 11/01/1977 |
| 3981108 | Reglet structure A reglet channel having an unimpaired apron depending from the outer edge of its upper flange down to the level of the outer edge of its lower flange to protect the sealing compound in the interior of the channel from the deleterious effects of rain and s... | 09/21/1976 |
| 3979860 | Roof and wall seal and cant A roof and wall seal incorporating a cant forms a flexible water tight closure between a roof structure and a wall perpendicular thereto. A cant partially receives roofing material to form a seal and extends upwardly relative thereto in spaced relation to... | 09/14/1976 |
| 3942292 | Lintel for double-skin wall A lintel for a double-skin wall including a first member secured to the inner skin and a second member secured to the outer skin and adapted to be disposed over an aperture or opening formed in said wall. The first member has a downwardly extending flange... | 03/09/1976 |