Number | Name | Date | Kind |
---|---|---|---|
1797919 | Loepsinger | Mar 1931 | |
3525402 | Hattori | Aug 1970 | |
3716103 | Tanaka | Feb 1973 | |
4279309 | Fischer et al. | Jul 1981 | |
4405018 | Fischer | Sep 1983 |
Entry |
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"Extended Coverage Horizontal Sidewall Spindlers (F950)", Grinnell Fire Protection Company, Inc., Sep. 1982. |
"Model `A` Center Strut Automatic Sprinkler", Central Sprinkler Company, product specification sheet. |
"Upright and Pendant Sprinklers (F980)", Grinnel Fire Protection Systems Company, Inc., Oct. 1984. |
"Micromatic.TM. Sprinkler Model M", Viking Sprinkler Company, (Aug. 1981). |
Product Literature, Grunau Sprinkler Manufacturing Division. |