Resources Contact Us Home
Browse by Category: Main > Plants, Animals & Agriculture
Class Information
Number: 449/21
Name: Bee culture > Hive > Passage > Queen/drone control means
Description: Structure intended to restrict passage such that a queen bee or a drone is limited in movement therethrough, while permitting passage of worker bees.

Patents under this class:

Patent Number Title Of Patent Date Issued
6645039 Honeycomb-shallow box partition for beehives Nov. 11, 2003
4455699 Pollen trap for double queen colony with queen excluder Jun. 26, 1984
4153960 Beehive May. 15, 1979
4135265 Bee hive Jan. 23, 1979
4094026 Beehive Jun. 13, 1978

  Recently Added Patents
Patient interface
Information processing apparatus capable of authentication processing with improved user convenience, control program for information processing apparatus, and recording medium having control
Liposomes with improved drug retention for treatment of cancer
Preparation process of transition metal boride and uses thereof
Piezoelectric speaker and method of manufacturing the same
(Meth)acrylic resin composition, imidized (meth)acrylic resin composition, and film obtained by molding them
SONOS stack with split nitride memory layer
  Randomly Featured Patents
Adaptive multiplex blend control for stereo decoder to maintain signal to noise ratio
Microporous polyethylene film having excellent physical properties, productivity, and quality consistency, and method of producing same
Charge pump for a hydrostatic transmission
Novel enaminosulfoxides and a process for their preparation
Transparent float body unit adaptable for intravenous infusion sets
Method of predicting residual service life for rolling bearings and a device for predicting residual service life for rolling bearings
Test paddle with handle
Thermoplastic adhesive preform for heat sink attachment
Structures subject to loading