Intermediate support for a skyline logging system | Intermediate support for a skyline logging system [Device is arranged to permit a logging carriage to travel past the intermediate location substantially without being obstructed by the device; the device consists of a supporting sheave assembly supported on a transverse line extending between two intermediate spars or spar trees; citation only]
1982
Biller, C.J.
书目信息
其它主题
Laws and regulations; Forestry production (harvesting and engineering); United states
语言
英语
注释
Copies of usda patents are available for a fee from the commissioner of patents and trademarks, u.s. patents and trademarks office, washington, d.c. 20231.
Includes references.
类型
Text; Monograph; Book
2024-02-27
MODS