BE727673A - - Google Patents
Info
- Publication number
- BE727673A BE727673A BE727673DA BE727673A BE 727673 A BE727673 A BE 727673A BE 727673D A BE727673D A BE 727673DA BE 727673 A BE727673 A BE 727673A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70170868A | 1968-01-30 | 1968-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE727673A true BE727673A (en) | 1969-07-30 |
Family
ID=24818353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE727673D BE727673A (en) | 1968-01-30 | 1969-01-30 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE727673A (en) |
| BR (1) | BR6906014D0 (en) |
| CH (1) | CH496962A (en) |
| DE (1) | DE1904547A1 (en) |
| FR (1) | FR2000980A1 (en) |
| NL (1) | NL6901350A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2321575A1 (en) * | 1975-08-22 | 1977-03-18 | Bfg Glassgroup | Transparent fire resistant multiple glazing system - with intumescent layers between glass, and frame designed to accept expansion |
-
1969
- 1969-01-27 DE DE19691904547 patent/DE1904547A1/en active Pending
- 1969-01-28 NL NL6901350A patent/NL6901350A/xx unknown
- 1969-01-29 CH CH137669A patent/CH496962A/en not_active IP Right Cessation
- 1969-01-30 BR BR20601469A patent/BR6906014D0/en unknown
- 1969-01-30 FR FR6901913A patent/FR2000980A1/fr not_active Withdrawn
- 1969-01-30 BE BE727673D patent/BE727673A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR6906014D0 (en) | 1973-01-18 |
| FR2000980A1 (en) | 1969-09-19 |
| DE1904547A1 (en) | 1969-10-16 |
| CH496962A (en) | 1970-09-30 |
| NL6901350A (en) | 1969-08-01 |