DE1639154U - KEYPAD ON CALCULATING MACHINES AND THE LIKE WITH DEVICE FOR EASY DETECTION OF PRESSED KEYS. - Google Patents
KEYPAD ON CALCULATING MACHINES AND THE LIKE WITH DEVICE FOR EASY DETECTION OF PRESSED KEYS.Info
- Publication number
- DE1639154U DE1639154U DEB8581U DEB0008581U DE1639154U DE 1639154 U DE1639154 U DE 1639154U DE B8581 U DEB8581 U DE B8581U DE B0008581 U DEB0008581 U DE B0008581U DE 1639154 U DE1639154 U DE 1639154U
- Authority
- DE
- Germany
- Prior art keywords
- keypad
- easy detection
- calculating machines
- pressed keys
- keys
- 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
Links
- 238000001514 detection method Methods 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 1
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 1
- 235000015246 common arrowhead Nutrition 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Input From Keyboards Or The Like (AREA)
Description
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB8581U DE1639154U (en) | 1952-04-08 | 1952-04-08 | KEYPAD ON CALCULATING MACHINES AND THE LIKE WITH DEVICE FOR EASY DETECTION OF PRESSED KEYS. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB8581U DE1639154U (en) | 1952-04-08 | 1952-04-08 | KEYPAD ON CALCULATING MACHINES AND THE LIKE WITH DEVICE FOR EASY DETECTION OF PRESSED KEYS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1639154U true DE1639154U (en) | 1952-05-29 |
Family
ID=30451545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB8581U Expired DE1639154U (en) | 1952-04-08 | 1952-04-08 | KEYPAD ON CALCULATING MACHINES AND THE LIKE WITH DEVICE FOR EASY DETECTION OF PRESSED KEYS. |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1639154U (en) |
-
1952
- 1952-04-08 DE DEB8581U patent/DE1639154U/en not_active Expired
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