US2515029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Midland Steel Products Co
•
Filing: 1945-09-10
•
Granted: 1950-07-11
•
Expires: 1965-09-10
Abstract
No abstract record available.
Inventors
- 👤 John R Almond
- 👤 William C Bosworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:00
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0675; F16K31/0679; Y; Y10; Y10S; Y10S251/00; Y10S251/90; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/86839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US109371A
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US657319A
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US658915A
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US897364A
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US1016167A
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US1257613A
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US1921092A
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US2291617A
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US2374593A
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US2379181A
Cited
US2360733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |