US2819432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid structure
Assignee: General Controls Co
•
Filing: 1952-11-03
•
Granted: 1958-01-07
•
Expires: 1972-11-03
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:31
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1460517A
Cited
US1830628A
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US2102761A
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FR820952A
Cited
DE742732C
Cited
US2351140A
Cited
US2374513A
Cited
US2394105A
Cited
US2476794A
Cited
GB657082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |