US2794368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid condensing lens for picture windows
Assignee: Individual
•
Filing: 1955-08-09
•
Granted: 1957-06-04
•
Expires: 1975-08-09
Abstract
No abstract record available.
Inventors
- 👤 Kosa Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:43
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/06; G02B3/00; G02B3/12; G02B3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US60109A
Cited
US509379A
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US1028224A
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FR515964A
Cited
US1515389A
Cited
US2165078A
Cited
US2300251A
Cited
US2484675A
Cited
US2449886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |