Patent US2967542A successfully refreshed from Google Patents.
US2967542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-flow ball cock
Assignee: Individual
•
Filing: 1957-01-28
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Granted: 1961-01-10
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Bernard B Einer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:06
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/02; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7446; Y10T137/7449; Y10T137/7462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1294908A
Cited
US1606274A
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US1649620A
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US2003380A
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US2312654A
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US2444958A
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US2430152A
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US2469617A
Cited
US2607364A
Cited
US2791235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |