US2580555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover arrangement for swimming pools and the like
Assignee: Individual
•
Filing: 1950-08-12
•
Granted: 1952-01-01
•
Expires: 1970-08-12
Abstract
No abstract record available.
Inventors
- 👤 Kroeger Blanche Lois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US573918A
Cited
US1089103A
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US1188411A
Cited
US1857425A
Cited
US2094299A
Cited
US2292078A
Cited
US2321078A
Cited
US2517393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |