US2433503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarized headlighting system foe
Assignee: —
•
Filing: —
•
Granted: 1947-12-30
•
Expires: 1964-12-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:22
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28; G02B27/281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2237565A
Cited
US2351797A
Cited
US1767831A
Cited
US2102632A
Cited
US2189270A
Cited
US2313923A
Cited
US2318705A
Cited
US2303906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |