US3458414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool water conditioner
Assignee: WILLIAM W T CRANE
•
Filing: 1967-11-24
•
Granted: 1969-07-29
•
Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 William W T Crane
- 👤 Carlile R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:35
CPC Classifications
G; G05; G05D; G05D21/00; G05D21/02; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/467; C02F1/4672; C02F1/4674; C02F1/46109; C02F2001/46133; C02F2001/46138; C02F2001/46152; C02F2001/46157; C02F2103/00; C02F2103/42; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611; C02F2201/4612; C02F2201/46125; C02F2201/4615; C02F2201/4616; C02F2201/4617; C02F2201/4618; C02F2301/00; C02F2301/02; C02F2301/024; C02F2301/04; C02F2301/043; C02F2303/00; C02F2303/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3361663A
Cited
US3351542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |