Patent US2995643A successfully refreshed from Google Patents.
US2995643A
Expired / Lapsed
US
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Heating device for a microscope
Assignee: C Reichert Optische Werke AG
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Filing: 1959-04-28
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Granted: 1961-08-08
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Expires: 1979-04-28
Abstract
No abstract record available.
Inventors
- 👤 Gabler Fritz
- 👤 Mitsche Roland
- 👤 Wurz Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:18
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24; G02B21/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1940256A
Cited
US2203452A
Cited
US2232354A
Cited
US2709842A
Cited
US2651236A
Cited
GB730203A
Cited
DE930469C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |