DE238181C - - Google Patents
Info
- Publication number
- DE238181C DE238181C DENDAT238181D DE238181DC DE238181C DE 238181 C DE238181 C DE 238181C DE NDAT238181 D DENDAT238181 D DE NDAT238181D DE 238181D C DE238181D C DE 238181DC DE 238181 C DE238181 C DE 238181C
- Authority
- DE
- Germany
- Prior art keywords
- marking
- key
- point
- shows
- guard
- 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
- 230000004888 barrier function Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000010053 printing by type Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/20—Checking timed patrols, e.g. of watchman
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE238181C true DE238181C (OSRAM) |
Family
ID=497728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT238181D Active DE238181C (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE238181C (OSRAM) |
-
0
- DE DENDAT238181D patent/DE238181C/de active Active
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