US3392837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-conditioning unit
Assignee: Individual
•
Filing: 1965-10-13
•
Granted: 1968-07-16
•
Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 William A Sanzenbacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; B; B01; B01D; B01D35/00; C02F1/28; C02F1/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US529471A
Cited
US2372340A
Cited
US2672987A
Cited
US2781312A
Cited
US3223619A
Cited
US3327859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |