US2619004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inspection device for determining height of dots on engraved plates
Assignee: Research Corp
•
Filing: 1950-08-18
•
Granted: 1952-11-25
•
Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Brian O'brien
- 👤 Clarence M Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:55
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190327658A
Cited
US1814540A
Cited
US2048879A
Cited
US2396440A
Cited
US2448974A
Cited
US2482598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |