US2515538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water aerator, filter, and heater
Assignee: Individual
•
Filing: 1948-10-25
•
Granted: 1950-07-18
•
Expires: 1968-10-25
Abstract
No abstract record available.
Inventors
- 👤 Byron T Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:29
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045; A01K63/047; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/2334; B01F23/23342; B01F23/23312
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1824823A
Cited
GB466143A
Cited
US2275428A
Cited
US2137397A
Cited
US2151225A
Cited
US2194037A
Cited
US2253516A
Cited
US2433592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |