US2949164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable sound suppressors for aircraft jet engines
Assignee: Individual
•
Filing: 1958-06-25
•
Granted: 1960-08-16
•
Expires: 1978-06-25
Abstract
No abstract record available.
Inventors
- 👤 Conrad J Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1273159A
Cited
US1685006A
Cited
US1992003A
Cited
US2353998A
Cited
US2543864A
Cited
US2807932A
Cited
US2910827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |