US2990473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recording, detecting and measuring radiation and for recording and recalling data
Assignee: Research Corp
•
Filing: 1955-05-04
•
Granted: 1961-06-27
•
Expires: 1975-05-04
Abstract
No abstract record available.
Inventors
- 👤 Kallmann Hartmut Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:12
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; G; G01; G01R; G01R1/00; G01R1/30; G01T; G01T1/00; G01T1/02; G01T1/29; G01T1/2914; G01T1/2921; G11; G11C; G11C13/00; G11C13/04; G11C13/048
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2239887A
Cited
US2207217A
Cited
US2243828A
Cited
US2297691A
Cited
US2546160A
Cited
US2551650A
Cited
US2562969A
Cited
US2566349A
Cited
US2730644A
Cited
US2706792A
Cited
US2780731A
Cited
US2730625A
Cited
US2834891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |