US3521965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid sample cell for polarimeters
Assignee: PE Manufacturing GmbH
•
Filing: 1965-12-20
•
Granted: 1970-07-28
•
Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Podschadly
- 👤 Peter Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:19
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/0303; G01D; G01D15/00; G01D15/16; G02; G02B; G02B5/00; G02B5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1906345A
Cited
US2027130A
Cited
US2043816A
Cited
GB722967A
Cited
US2819402A
Cited
US3183361A
Cited
US3379093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |