US2942656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film evaporator
Assignee: Bayer AG
•
Filing: 1956-11-28
•
Granted: 1960-06-28
•
Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Rodenacker Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:49
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/103; B; B01; B01D; B01D1/00; B01D1/22; B01D1/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE260595C
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US1420648A
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US765343A
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AT60105B
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US1576471A
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US2131666A
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US2418313A
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US2546381A
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FR1072135A
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US2782843A
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US2743015A
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US2804920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |