US3449772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically cycling swimming pool cleaning system
Assignee: ARTHUR W WERNER
•
Filing: 1967-07-24
•
Granted: 1969-06-17
•
Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:52
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/169
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1855258A
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US1800378A
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US2073784A
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US2088410A
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US2910086A
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US2982971A
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US3074078A
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US3152076A
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US3261371A
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US3278949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |