US2861493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the light rotatory power of an optically active substance
Assignee: Honeywell Inc
•
Filing: 1953-01-29
•
Granted: 1958-11-25
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Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Gustalf F Landegren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
G; G01; G01J; G01J4/00; G01J4/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2731875A
Cited
DE386537C
Cited
US2032128A
Cited
US2244362A
Cited
US2167484A
Cited
US2503808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |