US2991688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical comparator unit
Assignee: Milton Roy LLC
•
Filing: 1958-05-16
•
Granted: 1961-07-11
•
Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr George W Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:57
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23023E
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US2015675A
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US2301401A
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US2395489A
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US2483876A
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US2501599A
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US2694335A
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US2724304A
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US2686454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |