US2632669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glare filter
Assignee: Individual
•
Filing: 1946-08-14
•
Granted: 1953-03-24
•
Expires: 1966-08-14
Abstract
No abstract record available.
Inventors
- 👤 Edward F Piwczynski
- 👤 Galinski Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:08
CPC Classifications
B; B60; B60J; B60J3/00; B60J3/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1097295A
Cited
US1286352A
Cited
US1483640A
Cited
US1606853A
Cited
US1591739A
Cited
US1849338A
Cited
AU2355629A
Cited
US1920185A
Cited
US2050889A
Cited
US2207668A
Cited
US2261881A
Cited
US2220429A
Cited
US2236710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |