US2524657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting device
Assignee: Individual
•
Filing: 1945-12-20
•
Granted: 1950-10-03
•
Expires: 1965-12-20
Abstract
No abstract record available.
Inventors
- 👤 Paul B Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:58
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0013; G02B6/0023; G02B6/0031; G02B6/0081; G02B6/0086; G02B6/0091; G09; G09F; G09F13/00; G09F13/18; G02B6/0066; G02B6/007; G02B6/0071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1640170A
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US1707965A
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US1885830A
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US1930359A
Cited
US1928705A
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GB397547A
Cited
US1942073A
Cited
US2107767A
Cited
US2297851A
Cited
US2293185A
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US2374640A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |