Patent US2648253A successfully refreshed from Google Patents.
US2648253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color temperature meter and color analyzer
Assignee: GAF Chemicals Corp
•
Filing: 1949-04-23
•
Granted: 1953-08-11
•
Expires: 1969-04-23
Abstract
No abstract record available.
Inventors
- 👤 Monroe H Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:43
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1363267A
Cited
US1898219A
Cited
US1963185A
Cited
US2113450A
Cited
US2136900A
Cited
US2166824A
Cited
US2162529A
Cited
DE656151C
Cited
US2239362A
Cited
US2326878A
Cited
US2413706A
Cited
US2406716A
Cited
US2417023A
Cited
US2544196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |