US2936846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground exhaust noise suppressors
Assignee: RTX Corp
•
Filing: 1956-04-30
•
Granted: 1960-05-17
•
Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 John M Tyler
- 👤 George B Towle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:05
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1638087A
Cited
US1110040A
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US1401368A
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DE546538C
Cited
FR851012A
Cited
US2370259A
Cited
US2388924A
Cited
FR901803A
Cited
US2418488A
Cited
US2685936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |