US2589414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy transmission and reflection analyzer with adjustable filter
Assignee: Motors Liquidation Co
•
Filing: 1947-09-23
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Granted: 1952-03-18
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Expires: 1967-09-23
Abstract
No abstract record available.
Inventors
- 👤 Martin Edward John
- 👤 Robert N Frawley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:27
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/27; G01N21/274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1374965A
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US1524180A
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US1806198A
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US1860967A
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US1919182A
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US2133562A
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US2211628A
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US2312010A
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US2413080A
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US2376311A
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US2442910A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |