US3304560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbulence-reducing device for swimming pools
Assignee: ADOLPH KIEFER AND CO
•
Filing: 1964-08-05
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Granted: 1967-02-21
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Expires: 1984-08-05
Abstract
No abstract record available.
Inventors
- 👤 Adolph G Kiefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:51
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A COMBINATION SWIMMING LANE MARKER AND TURBULENCE-REDUCING DEVICE, AN ELONGATED HOLLOW BODY HAVING A LENGTHWISE CENTRAL PASSAGE THROUGH WHICH A RESTRAINING CABLE MAY BE PASSED, FLOAT MEANS FOR SUPPORTING SAID BODY WITH APPROXIMATELY ONE-HALF OF THE EXPOSED SURFACE OF THE BODY ABOVE THE WATER LINE, THE SURFACE OF THE BODY BEING FORAMINOUS TO PERMIT WATER TO PASS TRANSVERSELY
Claim 2
Dependent Claim
59 words
IN A COMBINATION SWIMMING LANE MARKER AND TURBULENCE-REDUCING DEVICE, AN ELONGATED HOLLOW BODY HAVING A LENGTHWISE CENTRAL PASSAGE THROUGH WHICH A RESTRAINING CABLE MAY BE PASSED, FLOAT MEANS FOR SUPPORTING SAID BODY WITH APPROXIMATELY ONE-HALF OF THE EXPOSED SURFACE OF THE BODY ABOVE THE WATER LINE, THE SURFACE OF THE BODY BEING FORAMINOUS TO PERMIT WATER TO PASS TRANSVERSELY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |