DE239980C - - Google Patents

Info

Publication number
DE239980C
DE239980C DENDAT239980D DE239980DA DE239980C DE 239980 C DE239980 C DE 239980C DE NDAT239980 D DENDAT239980 D DE NDAT239980D DE 239980D A DE239980D A DE 239980DA DE 239980 C DE239980 C DE 239980C
Authority
DE
Germany
Prior art keywords
ink
lenses
lens
holder
light
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.)
Active
Application number
DENDAT239980D
Other languages
German (de)
English (en)
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.)
Publication of DE239980C publication Critical patent/DE239980C/de
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/10—Map spot or coordinate position indicators; Map reading aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/02—Ink reservoirs
    • B43K5/12—Ink reservoirs with ink-level inspection means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
DENDAT239980D 1910-01-24 Active DE239980C (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191100218XA 1910-01-24 1910-01-24

Publications (1)

Publication Number Publication Date
DE239980C true DE239980C (enExample)

Family

ID=32394076

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT239980D Active DE239980C (enExample) 1910-01-24

Country Status (2)

Country Link
DE (1) DE239980C (enExample)
GB (1) GB191100218A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381818A1 (en) * 1989-01-09 1990-08-16 Eduardo Sanchez Muliterno Ink level inspection means for writing devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381818A1 (en) * 1989-01-09 1990-08-16 Eduardo Sanchez Muliterno Ink level inspection means for writing devices

Also Published As

Publication number Publication date
GB191100218A (en) 1911-02-23

Similar Documents

Publication Publication Date Title
EP0396946B1 (de) Lupenanordnung
DE239980C (enExample)
DE2520495C3 (de) Weitwinkelobjektiv
DE2409529A1 (de) Pankratisches weitwinkelprojektionsobjektiv
DE1161826B (de) Anordnung zur gerichteten UEbertragung von Licht unter Verwendung eines Lichtleitkoerpers
DE69210432T3 (de) Zeigerinstrument mit veränderlicher Farbanzeige für Armaturenbrett
DE864836C (de) Blendschutzkoerper fuer Kraftfahrzeugscheinwerfer
AT316906B (de) Facetten aufweisender Schmuckstein
DE390327C (de) Leuchtsprudel
DE862548C (de) Lichtfilter fuer photographische Zwecke
DE202025105841U1 (de) Lichtemittierender Knopf
DE482101C (de) Tageslichtspiegelreklamevorrichtung
DE928536C (de) Einrichtung zur Markierung eines Leuchtsignals
DE2115852C2 (de) Weitwinkelobjektiv großer Lichtstärke
DE852417C (de) Lichtsteuervorrichtung
DE386071C (de) Linsenscheinwerfer
DE870136C (de) Beleuchtungskoerper, insbesondere fuer Fahrtrichtungs- und Ortskennzeichnung
DE1512728A1 (de) Schauzeichen,insbesondere zur pneumatischen Betaetigung
CH708474B1 (de) Kosmetikspiegel mit LED-Band.
DE362333C (de) Leuchtschild
AT87636B (de) Gasmaske.
DE1937528C (de) Schau oder Ablenkvorrichtung
DE1150222B (de) Haftsauglinse
DE2014732A1 (de) Kontinuierlich veränderbare Linse
DE1933850U (de) Schirm fuer durchlichtprojektion, insbesondere fuer einen projektionsscheitelbrechwertmesser.