US2594568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1949-10-22
•
Granted: 1952-04-29
•
Expires: 1969-10-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Lawlor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/46; B01D24/4631; B01D24/4636; B01D24/02; B01D24/10; B01D24/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395625A
Cited
US707333A
Cited
US1668205A
Cited
US1747470A
Cited
US1828282A
Cited
US2219101A
Cited
US2360958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |