Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 4454951 | Remote controlled slack pulling log skidding carriage A remote controlled slack pulling log skidding carriage is provided for feeding a slack drag line toward a log to be skidded. A drive sheave rotatably mounted in the carriage is operated by a hydraulic motor. The fluid to operate the hydraulic motor is st... | 06/19/1984 |
| 4103784 | Single line, traction driven running skyline system A continuous, single line, traction driven cable transportation system, intended for logging applications but not limited thereto. The system is open, such that line can be added to it at any time, whether during rigging, or during operation. Thus, theore... | 08/01/1978 |
