Patent US3884229A successfully refreshed from Google Patents.
US2543010A
Expired / Lapsed
US
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Valve
Assignee: Individual
•
Filing: 1948-08-04
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Granted: 1951-02-27
•
Expires: 1968-08-04
Abstract
No abstract record available.
Inventors
- 👤 Lawrence H Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US80066A
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US1049845A
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US1389056A
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US1697953A
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US1968957A
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US2222419A
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US2417494A
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US2402950A
Cited
US2431437A
Cited
US2449438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |