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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'SPANG') AND (first_name = 'Henry W.') ORDER BY date ASC, patent, type

Total of 9 patents found where: Last Name is 'SPANG'; First Name is 'Henry W.';

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T / S Patent Date Description Patentee Category Assigned To
 1875
U 167,415 September 7, 1875 Improvement in Lightning Rods
Lightning rod system tied into the existing gutter of a home or building
SPANG, Henry W.
Lightning Rod  
 1876
R 6,835 January 4, 1876 Improvement in Lightning Rods
Lightning rod system tied into the existing gutter of a home or building (see 167,415)
SPANG, Henry W.
Lightning Rod  
 1877
U 196,493 October 23, 1877 Improvement in Lightning Conductors
Lighning rod conductor with improved grounding
SPANG, Henry W.
Lightning Rod Conductor  
 1878
U 204,257 May 28, 1878 Improvement in Lightning Conductors
Sheet metal strips connecting lightning rods to gutters
SPANG, Henry W.
Lightning Rod Conductor  
 1881
R 9,934 November 15, 1881 Lightning Rod
Reissue of R6,835 which was a reissue of 167,415; Lightning rod system tied into the existing gutter of a home or building
SPANG, Henry W.
Lightning Rod  
 1883
U 273,179 February 27, 1883 Lightning Conductor
Lightning rod system with an extended earth terminal utilizing a fence
SPANG, Henry W.
Lightning Rod  
U 284,082 August 28, 1883 Lightning Conductor
Lightning rod system of two or more rods and grounded to earth
SPANG, Henry W.
Lightning Rod  
U 286,086 October 2, 1883 Electrical Conductor for Oil Tanks
Lightning protection system for oil tanks (see 167,415)
SPANG, Henry W.
Lightning Rod  
 1890
U 437,526 September 30, 1890 Lightning Protector for Oil Tanks
Method of protecting oil tanks from lightning
SPANG, Henry W.
Lightning Rod  

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