Patent US3354554A successfully refreshed from Google Patents.
US3354554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescence device suitable for continuously indicating the tilt of a rocking or slanting plane in relation to horizontal reference plane
Assignee: Individual
•
Filing: 1965-06-16
•
Granted: 1967-11-28
•
Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Panerai Maria
- 👤 Panerai Giuseppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:44
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/20; H; H05; H05B; H05B33/00; H05B33/12; H05B33/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE319815C
Cited
US872183A
Cited
GB191108099A
Cited
GB123203A
Cited
US1600121A
Cited
US2303360A
Cited
US2262245A
Cited
US2532883A
Cited
US2584917A
Cited
US2789362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |