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Patents
Typewriting Machines Patents
Case-shift Mechanism Patents
For Shifting Platen Patents (Class 400/264)
For Shifting Platen Patents (Class 400/264)
Fore-and-aft (e.g., for top-strike or bottom-strike typewriter) (Class 400/265)
Mounted on pivotally movable platen carrier (Class 400/266)
With movement of platen out of typing position (Class 400/266.1)
Including adjustable counterbalance spring (Class 400/266.2)
Including a yieldable link (e.g., spring, etc.) (Class 400/266.3)
By depression of space-bar (Class 400/267)
There are no patents to show for this class.