Patent US3546720A successfully refreshed from Google Patents.
US3546720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectangular swimming pool
Assignee: Wilkes Pool Corp
•
Filing: 1967-12-12
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Granted: 1970-12-15
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Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 Monroe P Hoch
- 👤 Joseph Barrera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:31
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/0018; E04H4/0043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2490272A
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US3059243A
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US3256532A
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US3335430A
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US3409916A
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US3447168A
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US3427662A
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US3397494A
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US3318059A
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US3440780A
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US3354473A
Cited
US3428969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |