Patent US1956691A successfully refreshed from Google Patents.
US2967458A
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Instrument for use by a surgeon in viewing the field of operation under magnification
Assignee: Individual
•
Filing: 1957-05-16
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Granted: 1961-01-10
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Expires: 1977-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr William Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F16M11/18; F16M11/2007; F16M11/2035; F16M11/2064; F16M11/42; G; G02; G02B; G02B7/00; G02B7/001; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/20576; Y10T74/20888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2093604A
Cited
US2208882A
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US2235319A
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US2285987A
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US2482669A
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US2662444A
Cited
US2765702A
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US2645972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |