US3177501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pools and method of installing liners therefor
Assignee: Individual
•
Filing: 1962-02-12
•
Granted: 1965-04-13
•
Expires: 1982-02-12
Abstract
No abstract record available.
Inventors
- 👤 John P Kwake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:57
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/141; E04H4/142; E04H4/0075; E04H2004/146; E04H2004/147; Y; Y10; Y10S; Y10S4/00; Y10S4/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
IN A SWIMMING POOL; (A) A BOTTOM, AND AN UPRIGHT WALL ABOUT THE PERIPHERY OF SAID BOTTOM, SAID WALL HAVING A SUBSTANTIALLY VERTICAL INNER SURFACE, (A) SAID WALL HAVING AN INWARDLY OPENING UPPER GROOVE IN THE INNER SIDE THEREOF, (AA) AND AN UPRIGHT FLANGE, PARTIALLY CLOSING SAID GROOVE, (B) AND A LOWER GROOVE IN THE INNER SIDE OF THE WALL ADJACENT THE BOTTOM THEREOF, OF SIMILAR SHAPE AND ARRANGEMENT AS THE UPPER GROOVE INCLUDING SAID FLANGE; (B) AND A PLASTIC LINER OF A FLEXIBLE SHEET MATERIAL HAVING (A) A VERTICAL PORTION, (B) AND A BOTTOM PORTION, (C) A BEAD ALONG THE UPPER FREE EDGE OF SAID VERTICAL PORTION, (AA) SAID BEAD BEING SECURED IN SAID GROOVE,
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |