US2848639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating device
Assignee: Individual
•
Filing: 1955-09-20
•
Granted: 1958-08-19
•
Expires: 1975-09-20
Abstract
No abstract record available.
Inventors
- 👤 Urban Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:16
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/30; F21S41/32; F21S41/323; F21S41/10; F21S41/14; F21S41/162; F21S41/20; F21S41/285; F21S41/321; F21S41/40; F21S41/43; F21S41/435
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1540476A
Cited
US1562875A
Cited
US2064252A
Cited
US2177217A
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US2354804A
Cited
US2507552A
Cited
US2518505A
Cited
US2512623A
Cited
US2398970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |