US2869724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for demineralizing water
Assignee: Individual
•
Filing: 1955-06-29
•
Granted: 1959-01-20
•
Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harry J Mcdevitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:55
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/4242; B; B01; B01J; B01J47/00; B01J47/012; C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2207294A
Cited
US2695268A
Cited
US2525497A
Cited
US2761833A
Cited
US2781312A
Cited
US2751081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |