Patent US2565388A successfully refreshed from Google Patents.
US2565388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: MCCASKELL FILTERS Inc
•
Filing: 1945-06-15
•
Granted: 1951-08-21
•
Expires: 1965-06-15
Abstract
No abstract record available.
Inventors
- 👤 Mary A Mccaskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:47
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/21; B01D33/80; B01D33/804; B01D33/806; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1450560A
Cited
US920739A
Cited
US1266133A
Cited
US1533032A
Cited
US1515130A
Cited
US1619042A
Cited
US1446448A
Cited
US1627343A
Cited
US1494122A
Cited
US1700772A
Cited
US1894323A
Cited
US2037134A
Cited
US2156291A
Cited
US2221210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |