Patent US3497928A successfully refreshed from Google Patents.
US3497928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating expanded metal products,such as speaker baskets
Assignee: Alpha Products Inc
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Filing: 1967-05-31
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Granted: 1970-03-03
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Expires: 1987-05-31
Abstract
No abstract record available.
Inventors
- 👤 Aldo L Coen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:08
CPC Classifications
H; H04; H04R; H04R31/00; H04R2201/00; H04R2201/34; H04R2400/00; H04R2400/11; Y; Y10; Y10T; Y10T29/00; Y10T29/18; Y10T29/185
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) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |