US3010477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve unit
Assignee: Temprite Products Corp
•
Filing: 1958-09-08
•
Granted: 1961-11-28
•
Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Frank O Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; F16K15/142; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7866
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US405250A
Cited
US593594A
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US2481460A
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US2567391A
Cited
US2603951A
Cited
US2591148A
Cited
US2663540A
Cited
FR1031887A
Cited
FR1142320A
Cited
US2815041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |