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US3000507A
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Assignee: Individual
•
Filing: 1957-06-19
•
Granted: 1961-09-19
•
Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Frank W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:46
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/70; B01D33/74; B01D33/06; B01D33/073; B01D33/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US550353A
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US690030A
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US869720A
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US949724A
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US1627882A
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US2052156A
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US2139445A
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US2352303A
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US2567266A
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US2744633A
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US2751086A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |