US2875977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm ballcock
Assignee: Crane Co
•
Filing: 1953-08-19
•
Granted: 1959-03-03
•
Expires: 1973-08-19
Abstract
No abstract record available.
Inventors
- 👤 Carl R Stone
- 👤 Edward G Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7494
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE628844C
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US779069A
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US926730A
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CH50257A
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US1771410A
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US1976851A
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US2141070A
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US2211167A
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CH211459A
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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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |