Patent US571521A successfully refreshed from Google Patents.
Patent US1827858A successfully refreshed from Google Patents.
US2763153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersonic exploring device
Assignee: Reflectone Corp
•
Filing: 1954-04-21
•
Granted: 1956-09-18
•
Expires: 1974-04-21
Abstract
No abstract record available.
Inventors
- 👤 Luther G Simjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:41
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/42; A61B8/4272; A61B8/4281; A61B5/00; A61B5/103; A61B5/68; A61B5/6801; A61B5/6843
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |