US2989185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface skimmer for swimming pools and method
Assignee: Individual
•
Filing: 1958-01-31
•
Granted: 1961-06-20
•
Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
- 👤 Oliver M Lombardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/108; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; E04H4/1263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2667270A
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US2725356A
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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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |