US2591428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective color display projection apparatus
Assignee: Individual
•
Filing: 1950-01-20
•
Granted: 1952-04-01
•
Expires: 1970-01-20
Abstract
No abstract record available.
Inventors
- 👤 Mclean H Harris
- 👤 Raymond E Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:31
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/52; G01J3/526; G01J3/528
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1102595A
Cited
US1260221A
Cited
US1821626A
Cited
US1806452A
Cited
US1758938A
Cited
US1869275A
Cited
US1912582A
Cited
US2147648A
Cited
US2059361A
Cited
US2196587A
Cited
US2301274A
Cited
US2488955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |