US3548522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed plastic paddle or vane
Assignee: AMF Inc
•
Filing: 1967-10-02
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Granted: 1970-12-22
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Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edward Cullum Roper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:02
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/04; E01H5/045; Y; Y10; Y10S; Y10S264/00; Y10S264/83; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24595; Y10T428/24628; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24992
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |