US3472598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the relative index of refraction of light permeable substances
Assignee: Siemens Schweiz AG
•
Filing: 1966-07-18
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Granted: 1969-10-14
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Marcel K Hossmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:07
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/41; G01N21/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2703033A
Cited
US3186294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |