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US3430769A
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Apparatus for preparing drinkable water
Assignee: WILLIAM A SANZENBACHER
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Filing: 1966-12-01
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Granted: 1969-03-04
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 William A Sanzenbacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:30
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; C02F2307/00; C02F2307/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US529471A
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US2372340A
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US2672987A
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US2788128A
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US2781312A
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US3223619A
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US3327859A
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US3342340A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |