US2840180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for reducing acoustical energy in a fluid translating system
Assignee: Worthington Corp
•
Filing: 1955-03-23
•
Granted: 1958-06-24
•
Expires: 1975-03-23
Abstract
No abstract record available.
Inventors
- 👤 Nobles Daniel
- 👤 Norman L Meyerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:50
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/661; F04D29/663; F04D29/664; F16; F16L; F16L55/00; F16L55/02; F16L55/033; F16L55/0336
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE242038C
Cited
FR666774A
Cited
US2065343A
Cited
US1968456A
Cited
US1948211A
Cited
US2088922A
Cited
US2491445A
Cited
US2491876A
Cited
US2674336A
Cited
US2705541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |