US2568893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible member for adjustably attaching a light diffuser to a lighting
Assignee: Individual
•
Filing: 1947-08-19
•
Granted: 1951-09-25
•
Expires: 1967-08-19
Abstract
No abstract record available.
Inventors
- 👤 Krauthamer Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
F; F21; F21V; F21V14/00; F21V14/06; F21S; F21S8/00; F21S8/02; F21S8/04; F21V17/00; F21V17/02; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1357568A
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US1719401A
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US1794837A
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US1882312A
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US1844639A
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US2274612A
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US2227655A
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US2309143A
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US2365614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |