Patent US3062377A successfully refreshed from Google Patents.
US3062377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration equipment
Assignee: Permanent Filter Corp
•
Filing: 1959-07-07
•
Granted: 1962-11-06
•
Expires: 1979-07-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert H Howard
- 👤 Paul A Smith
- 👤 Robert A Lubben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:58
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/06; B01D17/08; B01D17/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2732077A
Cited
US1601502A
Cited
US2359386A
Cited
US2598818A
Cited
US2562730A
Cited
US2911101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |