US2991885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: New York Business Development Corp
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Filing: 1957-07-15
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Granted: 1961-07-11
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Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 Gutkowski Janusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:56
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/12; B01D35/14; B01D35/147; B01D35/153; B01D35/30; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302; B01D2201/40; B01D2201/4015; B01D2201/4046
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |