Patent US3475768A successfully refreshed from Google Patents.
US3475768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weatherproof cover for swimming pools and the like
Assignee: Individual
•
Filing: 1967-09-20
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Granted: 1969-11-04
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Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 John Thomas Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:54
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/10; E04H4/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2692566A
Cited
US3094708A
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US2964759A
Cited
US3008148A
Cited
US3118186A
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US3333373A
Cited
US3424179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |