Patent US2562730A successfully refreshed from Google Patents.
US2562730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter tube
Assignee: Permutit Co
•
Filing: 1949-06-17
•
Granted: 1951-07-31
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Durando Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:19
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D29/00; B01D29/11; B01D29/31; B01D29/33; B01D29/50; B01D29/52; B01D29/62; B01D29/66; B01D29/661; B01D29/88; B01D29/90; B01D29/96; B01D35/00; B01D35/16; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US272831A
Cited
US2079475A
Cited
US1040090A
Cited
US1246850A
Cited
US1263226A
Cited
US1771928A
Cited
US2200899A
Cited
US2228529A
Cited
US2300849A
Cited
US2423172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |