NL22496C - - Google Patents
Info
- Publication number
- NL22496C NL22496C NL22496DA NL22496C NL 22496 C NL22496 C NL 22496C NL 22496D A NL22496D A NL 22496DA NL 22496 C NL22496 C NL 22496C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/389—Precious stones; Pearls
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR606552T | 1925-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL22496C true NL22496C (en:Method) |
Family
ID=28052294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL22496D NL22496C (en:Method) | 1925-02-21 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1730190A (en:Method) |
| FR (1) | FR606552A (en:Method) |
| GB (1) | GB247968A (en:Method) |
| NL (1) | NL22496C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2705460B1 (fr) * | 1993-05-13 | 1995-07-13 | Atalay Han | Appareil gemmologique portable compact à rayon laser permettant notamment l'expertise par luminescence des perles perçées ou non. |
-
0
- NL NL22496D patent/NL22496C/xx active
-
1925
- 1925-02-21 FR FR606552D patent/FR606552A/fr not_active Expired
-
1926
- 1926-02-12 US US87914A patent/US1730190A/en not_active Expired - Lifetime
- 1926-02-17 GB GB4611/26A patent/GB247968A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR606552A (en:Method) | 1926-06-16 |
| US1730190A (en) | 1929-10-01 |
| GB247968A (en) | 1926-04-29 |