US2956507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquarium cleaning device
Assignee: Individual
•
Filing: 1953-12-04
•
Granted: 1960-10-18
•
Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US32815A
Cited
US157593A
Cited
US224370A
Cited
US240922A
Cited
US247142A
Cited
US249557A
Cited
US834185A
Cited
US1117779A
Cited
US1163716A
Cited
FR535136A
Cited
US1495902A
Cited
US1637219A
Cited
US1788709A
Cited
US1941859A
Cited
US2418247A
Cited
US2636308A
Cited
US2558471A
Cited
US2672987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |