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US2495512A
Expired / Lapsed
US
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Bubble tower
Assignee: Individual
•
Filing: 1945-08-02
•
Granted: 1950-01-24
•
Expires: 1965-08-02
Abstract
No abstract record available.
Inventors
- 👤 Morton I Dorfan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:12
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893906A
Cited
US1782862A
Cited
US1848462A
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US1918005A
Cited
US2194126A
Cited
US2365483A
Cited
US2378952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |