Patent US3457662A successfully refreshed from Google Patents.
US3457662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting apparatus
Assignee: Individual
•
Filing: 1967-05-19
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Granted: 1969-07-29
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Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Ben W Rau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:25
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1680633A
Cited
US2716298A
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US2800733A
Cited
US3026410A
Cited
US2962825A
Cited
US3300885A
Cited
US3314178A
Cited
US3367050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |