US3440780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool wall construction
Assignee: Cascade Industries Inc
•
Filing: 1967-01-10
•
Granted: 1969-04-29
•
Expires: 1987-01-10
Abstract
No abstract record available.
Inventors
- 👤 Charles R Adam
- 👤 Robert E West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:18
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/141; E04H4/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2753018A
Cited
US2915150A
Cited
FR1245055A
Cited
US3142069A
Cited
US3192538A
Cited
US3298038A
Cited
US3268917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |