US3081879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skimming apparatus
Assignee: Standard Oil Co
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Filing: 1960-04-29
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Granted: 1963-03-19
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Expires: 1980-04-29
Abstract
No abstract record available.
Inventors
- 👤 Carl J Schroeder
- 👤 Theodore F Doll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:54
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; B; B01; B01D; B01D21/00; B01D21/24; B01D21/2433
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN APPARATUS FOR REMOVING A FLOATING BIOLOGICAL GROWTH FROM THE SURFACE OF A BODY OF LIQUID WHICH APPARATUS COMPRISES GROWTH DISPOSAL MEANS, A RAMP OPERATIVELY POSITIONED TO ALTERNATELY ASSUME A GROWTH COLLECTING POSITION AND A GROWTH DISCHARGING POSITION, MEANS TO MOVE SAID RAMP FROM ONE OF SAID POSITIONS TO THE OTHER OF SAID POSITIONS, AT LEAST A SUBSTANTIAL PORTION OF SAID RAMP BEING POSITIONED BELOW SAID FLOATING GROWTH WHEN
Claim 2
Independent Claim
69 words
AN APPARATUS FOR REMOVING A FLOATING BIOLOGICAL GROWTH FROM THE SURFACE OF A BODY OF LIQUID WHICH APPARATUS COMPRISES GROWTH DISPOSAL MEANS, A RAMP OPERATIVELY POSITIONED TO ALTERNATELY ASSUME A GROWTH COLLECTING POSITION AND A GROWTH DISCHARGING POSITION, MEANS TO MOVE SAID RAMP FROM ONE OF SAID POSITIONS TO THE OTHER OF SAID POSITIONS, AT LEAST A SUBSTANTIAL PORTION OF SAID RAMP BEING POSITIONED BELOW SAID FLOATING GROWTH WHEN
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |