Patent DE350651C successfully refreshed from Google Patents.
US3470049A
Expired / Lapsed
US
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Method of encapsulating reactive layer exhibiting reversible variable light permeability
Assignee: Eberspaecher Climate Control Systems GmbH and Co KG
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Filing: 1965-08-17
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Granted: 1969-09-30
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Expires: 1985-08-17
Abstract
No abstract record available.
Inventors
- 👤 Gotthilf Reusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:21
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/525; G01K; G01K11/00; G01K11/12; G01N31/00; G01N31/22; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2359163A
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US2549513A
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US2501418A
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US2768106A
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US2710274A
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US3280701A
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US3350553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |