US3486261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating apparatus
Assignee: Individual
•
Filing: 1965-10-22
•
Granted: 1969-12-30
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 George K C Hardesty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:02
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0013; G02B6/0023; G02B6/0026; F; F21; F21V; F21V9/00; F21V9/40; F21W; F21W2131/00; F21W2131/40; F21W2131/406; G02B6/0075; G02B6/0076; G02B6/0081; G02B6/0086; G02B6/0091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920826A
Cited
US2524657A
Cited
US2623313A
Cited
US2722762A
Cited
US2731333A
Cited
US2906048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |