US3348898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable focal length objective having eight axially spaced lenses
Assignee: Agfa Gevaert NV
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Filing: 1963-11-25
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Granted: 1967-10-24
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Expires: 1983-11-25
Abstract
No abstract record available.
Inventors
- 👤 Baur Carl
- 👤 Otzen Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:54
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/146; G02B15/1461
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN ADJUSTABLE PROJECTION OBJECTIVE OF VARIABLE FOCAL LENGTH HAVING AN APERTURE OF 1:1.1, COMPRISING EIGHT AXIALLY SPACED LENSES OF WHICH THE SECOND AND THIRD LENSES ARE FORWARDLY AND REARWARDLY MOVABLE IN THE DIRECTION OF THE OPTICAL AXIS WHILE MAINTAINING A CONSTANT AXIAL AIRSPACE, THE OBJECTIVE AS A WHOLE HAVING A TOTAL LENGTH OF 2.78209F AND BEING CONSTRUCTED SUBSTANTIALLY ACCORDING TO THE SPECIFICATIONS IN THE FOLLOWING TABLE:
Claim 2
Dependent Claim
66 words
AN ADJUSTABLE PROJECTION OBJECTIVE OF VARIABLE FOCAL LENGTH HAVING AN APERTURE OF 1:1.1, COMPRISING EIGHT AXIALLY SPACED LENSES OF WHICH THE SECOND AND THIRD LENSES ARE FORWARDLY AND REARWARDLY MOVABLE IN THE DIRECTION OF THE OPTICAL AXIS WHILE MAINTAINING A CONSTANT AXIAL AIRSPACE, THE OBJECTIVE AS A WHOLE HAVING A TOTAL LENGTH OF 2.78209F AND BEING CONSTRUCTED SUBSTANTIALLY ACCORDING TO THE SPECIFICATIONS IN THE FOLLOWING TABLE:
References Cited (Backward Citations)
US3023673A
Cited
US3270615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |