US2642478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water detector
Assignee: HARRY E FRANK
•
Filing: 1949-12-29
•
Granted: 1953-06-16
•
Expires: 1969-12-29
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Lasky
- 👤 Russell W Seniff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:55
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/048
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |