DE99717C - - Google Patents
Info
- Publication number
- DE99717C DE99717C DENDAT99717D DE99717DA DE99717C DE 99717 C DE99717 C DE 99717C DE NDAT99717 D DENDAT99717 D DE NDAT99717D DE 99717D A DE99717D A DE 99717DA DE 99717 C DE99717 C DE 99717C
- Authority
- DE
- Germany
- Prior art keywords
- hourglass
- coin
- hook
- housing
- current
- 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
Links
- 239000000463 material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
- H04M17/026—Constructional features
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE99717C true DE99717C (forum.php) |
Family
ID=370573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT99717D Active DE99717C (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE99717C (forum.php) |
-
0
- DE DENDAT99717D patent/DE99717C/de active Active
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