US2680649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning showerhead
Assignee: Crane Co
•
Filing: 1951-08-22
•
Granted: 1954-06-08
•
Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 George E Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:30
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3006; B05B15/00; B05B15/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1236617A
Cited
US1758119A
Cited
US1826977A
Cited
US2013959A
Cited
US2049141A
Cited
US2583233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |