FR547668A - Improvements to trap doors - Google Patents

Improvements to trap doors

Info

Publication number
FR547668A
FR547668A FR547668DA FR547668A FR 547668 A FR547668 A FR 547668A FR 547668D A FR547668D A FR 547668DA FR 547668 A FR547668 A FR 547668A
Authority
FR
France
Prior art keywords
trap doors
doors
trap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Francis Washington Lethbridge
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR547668A publication Critical patent/FR547668A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K31/00—Housing birds
    • A01K31/14—Nest-boxes, e.g. for singing birds or the like
    • A01K31/16—Laying nests for poultry; Egg collecting

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Birds (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
FR547668D 1922-02-21 1922-02-21 Improvements to trap doors Expired FR547668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547668T 1922-02-21

Publications (1)

Publication Number Publication Date
FR547668A true FR547668A (en) 1922-12-21

Family

ID=8934360

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547668D Expired FR547668A (en) 1922-02-21 1922-02-21 Improvements to trap doors

Country Status (1)

Country Link
FR (1) FR547668A (en)

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