US2424064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating device
Assignee: Bausch and Lomb Inc
•
Filing: 1944-07-13
•
Granted: 1947-07-15
•
Expires: 1964-07-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond F E Stegeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:29
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/0006; F; F21; F21L; F21L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US218055A
Cited
US247229A
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US917021A
Cited
US1550197A
Cited
US1751584A
Cited
US1782906A
Cited
US1915811A
Cited
FR787117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |