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Patent US3442573A successfully refreshed from Google Patents.
US3442573A
Expired / Lapsed
US
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Varifocal cinematographic objective for large-frame sizes and including a four-component forward lens group and a four-lens rear group
Assignee: Jos Schneider Optische Werke GmbH
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Filing: 1965-09-21
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Granted: 1969-05-06
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Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Karl Macher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:14
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/145; G02B15/1451; G02B15/145125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB942966A
Cited
US3273457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |