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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised
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CPC
COOPERATIVE PATENT CLASSIFICATION
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LIGHTER-THAN AIR AIRCRAFT [2013‑01]
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Lighter-than-air aircraft [2013‑01]
.
{
Arrangements for landing or taking-off e.g. alighting gear
}
[2013‑01]
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Non-rigid airships (B64B 1/58 takes precedence; balloons B64B 1/40) [2013‑01]
. .
the profile being maintained by ties or cords connecting opposite surfaces [2013‑01]
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Rigid airships; Semi-rigid airships (B64B 1/58 takes precedence) [2013‑01]
B64B 1/08
. .
Framework construction [2013‑01]
B64B 1/10
. .
Tail unit construction (B64B 1/12 takes precedence) [2013‑01]
B64B 1/12
. .
Movable control surfaces [2013‑01]
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. .
Outer covering [2013‑01]
B64B 1/16
. . .
rigid [2013‑01]
. . .
Attachment to structure [2013‑01]
. .
provided with wings or stabilising surfaces
{
(tail unit construction B64B 1/10; movable control surfaces B64B 1/12)
}
[2013‑01]
B64B 1/22
. .
Arrangement of cabins or gondolas [2013‑01]
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B64B 1/24
. .
Arrangement of propulsion plant (B64B 1/34 takes precedence) [2013‑01]
B64B 1/26
. . .
housed in ducts [2013‑01]
B64B 1/28
. . .
housed in nacelles [2013‑01]
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B64B 1/30
. . .
Arrangement of propellers [2013‑01]
. . . .
surrounding hull [2013‑01]
B64B 1/34
. . . .
of lifting propellers [2013‑01]
B64B 1/36
. .
Arrangement of jet reaction apparatus for propulsion or directional control [2013‑01]
B64B 1/38
. .
Controlling position of centre of gravity [2013‑01]
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Balloons (B64B 1/58 takes precedence; toy balloons A63H 27/10) [2013‑01]
B64B 1/42
. .
Construction or attachment of stabilising surfaces [2013‑01]
B64B 1/44
. .
adapted to maintain predetermined altitude [2013‑01]
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B64B 1/46
. .
associated with apparatus to cause bursting [2013‑01]
B64B 1/48
. . .
to enable load to be dropped by parachute [2013‑01]
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B64B 1/50
. .
Captive balloons [2013‑01]
B64B 1/52
. . .
attaching trailing entanglements [2013‑01]
B64B 1/54
. . .
connecting two or more balloons in superimposed relationship [2013‑01]
B64B 1/56
. . .
stabilised by rotary motion [2013‑01]
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Arrangements or construction of gas-bags; Filling arrangements [2013‑01]
. .
Gas-bags surrounded by separate containers of inert gas [2013‑01]
B64B 1/62
. .
Controlling gas pressure, heating, cooling, or discharging gas [2013‑01]
B64B 1/64
. .
Gas valve operating mechanisms [2013‑01]
.
Mooring attachments (mooring masts B64F) [2013‑01]
B64B 1/68
.
Water flotation gear [2013‑01]
B64B 1/70
.
Ballasting arrangements [2013‑01]
B64B 2201/00
Hybrid airships, i.e. airships where lift is generated aerodynamically and statically [2013‑01]
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013