US2618968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersonic testing apparatus
Assignee: Individual
•
Filing: 1946-05-06
•
Granted: 1952-11-25
•
Expires: 1966-05-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A Mcconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:32
CPC Classifications
G; G01; G01B; G01B17/00; G01B17/08; G01N; G01N29/00; G01N29/04; G01N29/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2010189A
Cited
US2216949A
Cited
US2280226A
Cited
CH232929A
Cited
US2378237A
Cited
US2394461A
Cited
US2527208A
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 |