US2909668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detection and indicating devices
Assignee: Graviner Manufacturing Co Ltd
•
Filing: 1958-06-04
•
Granted: 1959-10-20
•
Expires: 1978-06-04
Abstract
No abstract record available.
Inventors
- 👤 Leslie T Thurlby
- 👤 Jack B Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2640880A
Cited
US2734149A
Cited
US1072152A
Cited
US1880289A
Cited
US1907124A
Cited
US2120765A
Cited
US2327222A
Cited
US2773992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |