US2787885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage means for chemical reaction turbines
Assignee: Maynor Res Foundation Inc
•
Filing: 1952-09-12
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Granted: 1957-04-09
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Expires: 1972-09-12
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Maynor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:06
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22; F02C7/232; F23; F23R; F23R3/00; F23R3/28; F05; F05D; F05D2260/00; F05D2260/60; F05D2260/602
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822176A
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US850307A
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US1827246A
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US2424610A
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US2616258A
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US2508260A
Cited
US2578501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |