Patent US2984154A successfully refreshed from Google Patents.
US2984154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zoom lens focusing mechanism
Assignee: Individual
•
Filing: 1958-06-02
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Granted: 1961-05-16
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:45
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/143; G02B15/1431; G02B15/143105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732763A
Cited
US1950166A
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US1947669A
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US2159394A
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US2165341A
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US2454686A
Cited
US2547187A
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US2532685A
Cited
US2720817A
Cited
US2753758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |