US2697637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water inlet nozzle for concrete mixers or the like
Assignee: Blaw Knox Co
•
Filing: 1949-07-28
•
Granted: 1954-12-21
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Expires: 1969-07-28
Abstract
No abstract record available.
Inventors
- 👤 Clarence F Mittelstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:53
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/12; B28C7/126; B28C7/128; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7859; Y10T137/7861
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US85510A
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US384306A
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US1368315A
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US1342719A
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US1326445A
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US2275937A
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US2413488A
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US2533191A
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US2556537A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |