Patent US2738427A successfully refreshed from Google Patents.
US2738427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purifier
Assignee: Individual
•
Filing: 1953-05-06
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Granted: 1956-03-13
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Expires: 1973-05-06
Abstract
No abstract record available.
Inventors
- 👤 William N Wagnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:23
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
APPARATUS FOR PURIFYING WATER COMPRISING A CYLINDRICAL CASING HAVING A HIGHLY REFLECTIVE INNER SURFACE, A CLOSURE MEMBER FOR ONE END OF SAID CASING, A REMOVABLE CLOSURE MEMBER FOR THE OTHER END OF SAID CASING, A STRAIGHT ELONGATED ULTRA-VIOLET RAY BULB IN SAID CASING DISPOSED ALONG THE AXIS THEREOF, A CLOSED WATER CONDUIT HAVING A PLURALITY OF PORTIONS IN SAID CASING DISPOSED AROUND SAID
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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |