NL247751A - - Google Patents
Info
- Publication number
- NL247751A NL247751A NL247751DA NL247751A NL 247751 A NL247751 A NL 247751A NL 247751D A NL247751D A NL 247751DA NL 247751 A NL247751 A NL 247751A
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/22—Uniting glass lenses, e.g. forming bifocal lenses
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US788971A US3068671A (en) | 1959-01-26 | 1959-01-26 | Method of making bifocal lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL247751A true NL247751A (nl) |
Family
ID=25146157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL247751D NL247751A (nl) | 1959-01-26 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3068671A (nl) |
| BE (1) | BE586912A (nl) |
| DE (1) | DE1139943B (nl) |
| NL (1) | NL247751A (nl) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3351449A (en) * | 1964-06-15 | 1967-11-07 | Corning Glass Works | Forced stream feeding through orifice |
| GB9221312D0 (en) * | 1992-10-09 | 1992-11-25 | Pilkington Visioncare Inc | Improvements in or relating to ophthalmic lens manufacture |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1165978A (en) * | 1915-12-28 | Alexander Kinnear | Process for forming a bifocal lens. | |
| US2112659A (en) * | 1934-05-02 | 1938-03-29 | Bausch & Lomb | Method of making lenses |
| US2059767A (en) * | 1934-10-26 | 1936-11-03 | Bausch & Lomb | Manufacture of ophthalmic lenses |
| US2182537A (en) * | 1937-10-15 | 1939-12-05 | Otto G Haussmann | Ophthalmic lens and process of making the same |
| US2433013A (en) * | 1942-12-28 | 1947-12-23 | American Optical Corp | Means for forming lenses |
| US2704010A (en) * | 1952-03-10 | 1955-03-15 | Lantz | Multifocal lens and method of making the same |
| BE525925A (nl) * | 1953-01-23 | |||
| US2734315A (en) * | 1954-02-11 | 1956-02-14 | poundstone |
-
0
- NL NL247751D patent/NL247751A/xx unknown
-
1959
- 1959-01-26 US US788971A patent/US3068671A/en not_active Expired - Lifetime
-
1960
- 1960-01-18 DE DEC20580A patent/DE1139943B/de active Pending
- 1960-01-25 BE BE586912A patent/BE586912A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1139943B (de) | 1962-11-22 |
| BE586912A (fr) | 1960-07-25 |
| US3068671A (en) | 1962-12-18 |