DE233771C - - Google Patents

Info

Publication number
DE233771C
DE233771C DENDAT233771D DE233771DA DE233771C DE 233771 C DE233771 C DE 233771C DE NDAT233771 D DENDAT233771 D DE NDAT233771D DE 233771D A DE233771D A DE 233771DA DE 233771 C DE233771 C DE 233771C
Authority
DE
Germany
Prior art keywords
pru
sponsors
corrugations
weakened
end faces
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
DENDAT233771D
Other languages
German (de)
English (en)
Publication of DE233771C publication Critical patent/DE233771C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/02—Non-telescopic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
DENDAT233771D Active DE233771C (en:Method)

Publications (1)

Publication Number Publication Date
DE233771C true DE233771C (en:Method)

Family

ID=493683

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT233771D Active DE233771C (en:Method)

Country Status (1)

Country Link
DE (1) DE233771C (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758402C (de) * 1940-04-18 1954-02-15 Hugo Herzbruch & Soehne Wanderpfeiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758402C (de) * 1940-04-18 1954-02-15 Hugo Herzbruch & Soehne Wanderpfeiler

Similar Documents

Publication Publication Date Title
Multhauf et al. Teacher pupil-control ideology and behavior and classroom environmental robustness
DE233771C (en:Method)
DE532014C (de) Vorrichtung zum Halten und Vorschieben von gestanzten, duennen Blechen
DE960333C (de) Rolloverschluss fuer photographische Wechselkassetten
DE140658C (en:Method)
TWYFORD JR A comparison of methods for measuring profiles of learning from instructional films
DE2615563A1 (de) Quintenzirkel-tabelle
DE377432C (de) Ledergelenkriemen
DE621795C (de) Blinkeinrichtung mit zwei von einem Uhrwerk bewegten gleichachsigen und gegeneinander versetzten Schaltsternen
DE1535959C (de) Vorrichtung zur Verhinderung des Auf rauhens der Blattzahnkanten eines Webeblat tes
Tarrant Zeno on Knowledge or on Geometry? The Evidence of anon. in Theaetetum'
AT98145B (de) Presse.
US344479A (en) Otto e
DE44895C (de) Briefsammler
DE162725C (en:Method)
DE246370C (en:Method)
DE1058775B (de) Auswerteinrichtung fuer in gleichen Abstaenden nacheinander auf Streifen aufgezeichnete Wertmarkierungen
DE143094C (en:Method)
Holbrook Role of subjective probability in mediating the relationship between word frequency and recognition of error
DE1038457B (de) Echolotgeraet
DE507888C (de) Fuehrungsvorrichtung fuer die Papierbahn an Papierbearbeitungsmaschinen, insbesondere Lichtpausmaschinen
DE1020309B (de) Registerzapfen bzw. Karteikartenreiter und Verfahren zu deren Herstellung
DE353282C (de) Blaettchen zum Verbinden einzelner Blaetter
EP0299165A3 (de) Brieflocher
US723566A (en) Cryptograph.