Patent US3487624A successfully refreshed from Google Patents.
US3487624A
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US
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Assignee: Individual
•
Filing: 1968-08-06
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Granted: 1970-01-06
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Expires: 1988-08-06
Abstract
No abstract record available.
Inventors
- 👤 Gerald Tignanelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:39
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US956450A
Cited
US1455117A
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US2402140A
Cited
US2509300A
Cited
US2768707A
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US2825148A
Cited
US3046718A
Cited
US3087849A
Cited
US3365864A
Cited
US3383839A
Cited
US3423906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |