US2050608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colorimeter
Assignee: Individual
•
Filing: 1934-06-25
•
Granted: 1936-08-11
•
Expires: 1954-06-25
Abstract
No abstract record available.
Inventors
- 👤 Paul A E Hellige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/29; G01N21/293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-08-11 | 1940-02-10 | 1940-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-11 | 1944-02-10 | 1944-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-11 | 1948-02-10 | 1948-08-11 | $7700.00 | Window Closed / Lapsed |