US3545619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment plant
Assignee: Neptune Microfloc Inc
•
Filing: 1969-04-09
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Granted: 1970-12-08
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Expires: 1989-04-09
Abstract
No abstract record available.
Inventors
- 👤 William F Ettlich
- 👤 Andrew Kou-Ying Hsiung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:28
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012; B01D21/0006; B01D21/0039; B01D21/02; B01D21/08; B01D21/28; B01D21/286; B01D21/30; B01D21/34; C; C02; C02F; C02F1/00; C02F1/001; C02F1/004; C02F1/52; C02F1/5281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |