Patent US2436225A successfully refreshed from Google Patents.
US2678041A
Expired / Lapsed
US
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Handle connection for diagnostic instruments
Assignee: American Optical Corp
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Filing: 1951-05-21
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Granted: 1954-05-11
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Expires: 1971-05-21
Abstract
No abstract record available.
Inventors
- 👤 Milton R Thorburn
- 👤 George F Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:01
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/12; A61B3/1208; A61B1/00; A61B1/06; A61B1/0661; A61B1/0669; A61B1/227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |