US2672987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquarium cleaning device
Assignee: Individual
•
Filing: 1950-06-19
•
Granted: 1954-03-23
•
Expires: 1970-06-19
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:52
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US218366A
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US598115A
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US723042A
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US961379A
Cited
US1041378A
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US1063468A
Cited
US1352306A
Cited
US2293051A
Cited
US2515538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |