US2499415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control
Assignee: Individual
•
Filing: 1945-07-09
•
Granted: 1950-03-07
•
Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Ralls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:04
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/312; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359; Y10T137/8376; Y10T137/8593; Y10T137/87917; Y10T137/87925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US38138A
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US207365A
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US838509A
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US759448A
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US927438A
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US1238259A
Cited
US1555075A
Cited
US1684651A
Cited
US1893602A
Cited
US2200416A
Cited
US2214959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |