FR419669A - Improvements to glasses and binoculars - Google Patents
Improvements to glasses and binocularsInfo
- Publication number
- FR419669A FR419669A FR419669DA FR419669A FR 419669 A FR419669 A FR 419669A FR 419669D A FR419669D A FR 419669DA FR 419669 A FR419669 A FR 419669A
- Authority
- FR
- France
- Prior art keywords
- binoculars
- glasses
- 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
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
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
- G02B23/18—Housings; Caps; Mountings; Supports, e.g. with counterweight for binocular arrangements
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR419669T | 1909-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR419669A true FR419669A (en) | 1911-01-12 |
Family
ID=1462878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR419669D Expired FR419669A (en) | 1909-10-30 | 1909-10-30 | Improvements to glasses and binoculars |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR419669A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2642776A (en) * | 1949-12-31 | 1953-06-23 | American Optical Corp | Variable power bifocal lens |
US2799862A (en) * | 1954-07-19 | 1957-07-23 | American Optical Corp | Eye protective means |
-
1909
- 1909-10-30 FR FR419669D patent/FR419669A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2642776A (en) * | 1949-12-31 | 1953-06-23 | American Optical Corp | Variable power bifocal lens |
US2799862A (en) * | 1954-07-19 | 1957-07-23 | American Optical Corp | Eye protective means |
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