| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '138') ORDER BY assigned_to ASC, date, patent, type |
Total of 6 patents found where: Class is '138';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| U | 154,638 | September 1, 1874 | Improvement in Casting Stench Traps Method of casting lead S-traps |
BROOKE, Homer |
Misc | |
| U | 159,007 | January 19, 1875 | Improvement in Lightning Rods Lightning rod made of sheet metal formed with spiral-fluted sides with edges locking together and crimping the edges of the star wings to on each end of two sections to secure them together |
WILMOT, Samuel R. |
Lightning Rod | |
| U | 937,736 | October 19, 1909 | Insulator Pin with spring to fit into threads |
DUMBOLTON, Perry S. FRANZ, Frank |
Pin | |
| George Goss, Sr. | ||||||
| U | 361,759 | April 26, 1887 | Composition for Pipes, Artificial Stone, etc. Composition formula of Gilsonite |
GILSON, Samuel H. |
Composition | 1/2 to George Goss, Sr. |
| The Bristol Brass and Clock Co. | ||||||
| U | 175,022 | March 21, 1876 | Improvement in Lamp Collars Oil lamp collar |
BROWN, George W. |
HU | The Bristol Brass and Clock Co. |
| The Gould & Watson Co. | ||||||
| U | 411,384 | September 17, 1889 | Packing for Steam Pipes Composition material used to coat the outside of pipes to act as an insulator against heat |
LEE, Charles Tennant |
Composition | 1/2 to The Gould & Watson Co. |
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