US2638593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sunshield with depending visor
Assignee: Polaroid Corp
•
Filing: 1951-04-19
•
Granted: 1953-05-19
•
Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Vaito K Eloranta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:47
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/04; A61F9/045; G; G02; G02C; G02C7/00; G02C7/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US217500A
Cited
US399892A
Cited
US1313469A
Cited
US1452305A
Cited
US1706667A
Cited
GB290771A
Cited
US2005426A
Cited
US2565362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |