US2737972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonnet shield for valves or the like
Assignee: Individual
•
Filing: 1953-03-24
•
Granted: 1956-03-13
•
Expires: 1973-03-24
Abstract
No abstract record available.
Inventors
- 👤 George L Callery
- 👤 Iii Alonzo White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:54
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/12; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US251277A
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US293463A
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US1293607A
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US1861206A
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US1832239A
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US2111844A
Cited
US2397801A
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US2488466A
Cited
DE842958C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |