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US2701075A
Expired / Lapsed
US
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Safety device
Assignee: Black Sivalls and Bryson Inc
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Filing: 1951-12-17
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Granted: 1955-02-01
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Expires: 1971-12-17
Abstract
No abstract record available.
Inventors
- 👤 Robert S Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:51
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/162; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714; Y10T137/1729
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AU1079133A
Cited
US2097511A
Cited
US2194159A
Cited
GB578008A
Cited
US2425778A
Cited
US2564171A
Cited
US2620038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |