Patent EP0226470A2 successfully refreshed from Google Patents.
US2994401A
Expired / Lapsed
US
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Acoustic panel
Assignee: AMF Inc
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Filing: 1958-05-26
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Granted: 1961-08-01
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Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Roland B Bourne
- 👤 Tyskewicz John Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:24
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/8209; E04B1/84; E04B1/86; G; G10; G10K; G10K11/00; G10K11/16; E04B2001/8414; E04B2001/8423; E04B2001/8433; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24479
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |