US2752045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforated drum type liquid filter
Assignee: LLOYD HORNBOSTEL JR
•
Filing: 1953-07-28
•
Granted: 1956-06-26
•
Expires: 1973-07-28
Abstract
No abstract record available.
Inventors
- 👤 Hornbostel Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/09; B01D29/096; B01D33/00; B01D33/044; B01D33/048; B01D33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US550353A
Cited
GB190122852A
Cited
US794631A
Cited
US953744A
Cited
US993839A
Cited
US1103725A
Cited
US1797248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |