US3049237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for water treatment apparatus
Assignee: Aquamatic Inc
•
Filing: 1958-08-08
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Granted: 1962-08-14
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Expires: 1978-08-08
Abstract
No abstract record available.
Inventors
- 👤 Robert A Whitlock
- 👤 Thomas W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/87265; Y10T137/87507; Y10T137/87555; Y10T137/87571; Y10T137/87587; Y10T137/87619; Y10T137/87627
Claims Analysis
Total Claims: 0
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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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |