Patent US2848722A successfully refreshed from Google Patents.
US2848722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover assembly for swimming pools
Assignee: Individual
•
Filing: 1957-03-28
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Granted: 1958-08-26
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Expires: 1977-03-28
Abstract
No abstract record available.
Inventors
- 👤 Peter N Choporis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:43
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/08; E04H4/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1877361A
Cited
US1952681A
Cited
US2287645A
Cited
US2755081A
Cited
US2754899A
Cited
US2797083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |