US2857014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer for positive pressure gas streams subjected to high amplitude pulsations
Assignee: Maxim Silencer Co
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Filing: 1956-11-01
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Granted: 1958-10-21
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Expires: 1976-11-01
Abstract
No abstract record available.
Inventors
- 👤 Roland B Bourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:32
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/02; F01N2490/00; F01N2490/15; F01N2490/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR471143A
Cited
GB191400265A
Cited
US2274459A
Cited
US2138477A
Cited
US2277132A
Cited
US2339834A
Cited
US2520756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |