US Patent Class 258
RAILWAY MAIL DELIVERY



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  MISCELLANEOUS
1.2  DF  AIRCRAFT IN FLIGHT
1.4  DF  .~ To or from another moving vehicle and/or requiring circular aircraft flight
1.6  DF  .~ With projector
1.8  DF  .~ Load exchange
2  DF  SIGNALING FEATURE
3  DF  HAND TOOLS
4  DF  MAGNETIC
5  DF  PROJECTORS
6  DF  .~ Automatically actuated
7  DF  .~.~ Spring
8  DF  CAR-POSITIONED RECEIVER OR SUPPORT
9  DF  LATERALLY SLIDING RECEIVER OR SUPPORT
10  DF  LONGITUDINALLY EXTENDING AUXILIARY TRACK
11  DF  COMBINED RECEIVER AND SUPPORT
12  DF  .~ Fork and other receiver
13  DF  .~.~ Retaining feature
14  DF  .~ Fork receiver only
15  DF  .~.~ Retaining feature
16  DF  .~.~.~ Impact-operated load release
17  DF  .~.~.~ Receiver-engaging feature
18  DF  .~.~ Receiver-engaging feature
19  DF  .~ Impact-operated load release
20  DF  RECEIVERS
21  DF  .~ Fork
22  DF  .~.~ Retaining feature
23  DF  SUPPORTS
24  DF  .~ Interconnected arms
25  DF  .~ Impact-operated load release
26  DF  .~ Receiver-engaging feature