Patent US2619233A successfully refreshed from Google Patents.
US2619233A
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US
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Slide filing means
Assignee: Technicon International Ltd
•
Filing: 1947-02-25
•
Granted: 1952-11-25
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Expires: 1967-02-25
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Weiskopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:57
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US11504A
Cited
US642277A
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US1487942A
Cited
US1470549A
Cited
US2080805A
Cited
US2118239A
Cited
US2137369A
Cited
US2119407A
Cited
US2279643A
Cited
US2482258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |