US2603465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating device
Assignee: Individual
•
Filing: 1950-02-17
•
Granted: 1952-07-15
•
Expires: 1970-02-17
Abstract
No abstract record available.
Inventors
- 👤 Malzacher Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:17
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/40; B01F33/403; B01F23/00; B01F23/20; B01F23/23; B01F23/231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US213309A
Cited
US237150A
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US785622A
Cited
US1939583A
Cited
US1964345A
Cited
US2074597A
Cited
FR777175A
Cited
US2072691A
Cited
US2076979A
Cited
GB475242A
Cited
US2345081A
Cited
US2371431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |