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US3478889A
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Assignee: ALBERT P KRUEGER
•
Filing: 1967-08-31
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Granted: 1969-11-18
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Expires: 1987-08-31
Abstract
No abstract record available.
Inventors
- 👤 Julius H Fessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:02
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/563; B01L3/5635; B01L2300/00; B01L2300/04; B01L2300/041; B01L2300/044; B01L2300/06; B01L2300/0681; B01L2400/00; B01L2400/04; B01L2400/0475; B01L2400/0487; B01L2400/049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |