US2882991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet engine silencer
Assignee: Individual
•
Filing: 1955-09-02
•
Granted: 1959-04-21
•
Expires: 1975-09-02
Abstract
No abstract record available.
Inventors
- 👤 Claud R Killian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:04
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/78; F02K1/82; F02K1/827
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE298935C
Cited
DE215488C
Cited
CA480376A
Cited
US1607003A
Cited
FR670773A
Cited
US2096260A
Cited
FR800850A
Cited
FR830201A
Cited
GB581974A
Cited
US2705541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |