Patent US4047868A successfully refreshed from Google Patents.
Patent US2491744A successfully refreshed from Google Patents.
US2491744A
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Aquatic device
Assignee: Individual
•
Filing: 1944-07-15
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Granted: 1949-12-20
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Expires: 1964-07-15
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Link
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/085; B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/246; B63B1/28; B63B1/285; B63B1/286; B63B1/02; B63B1/10; B63B1/14; B63B2001/145; B63B34/00; B63B34/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1272766A
Cited
US1307135A
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US1823735A
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US1825363A
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US1865828A
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US1927938A
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US2139303A
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US2099857A
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US2358018A
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US2358016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |