US3433570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple attenuated total reflection apparatus and method
Assignee: Boeing North American Inc
•
Filing: 1963-07-15
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Granted: 1969-03-18
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Wilford N Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/41; G01N21/43; G01N21/431; G01N21/55; G01N21/552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3071038A
Cited
US3282149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |