US2780240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid safety check and cushioning device
Assignee: Individual
•
Filing: 1952-06-03
•
Granted: 1957-02-05
•
Expires: 1972-06-03
Abstract
No abstract record available.
Inventors
- 👤 Paul D Madak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T11/323; F; F15; F15B; F15B13/00; F15B13/01; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307; Y10T137/7722; Y10T137/7781; Y10T137/7783; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2254209A
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US1341544A
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FR546913A
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US1525775A
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US2121936A
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US2093015A
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US2127849A
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US2402171A
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US2386585A
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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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |