US2821210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple orifice metering mechanism for anhydrous ammonia
Assignee: Individual
•
Filing: 1955-08-15
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Granted: 1958-01-28
•
Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Otis M Liley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:08
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/024; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8122; Y10T137/8158; Y10T137/8593; Y10T137/87265; Y10T137/87298; Y10T137/877; Y10T137/87877; Y10T137/87901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US899201A
Cited
US1436417A
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US2148414A
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US2038511A
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US2163591A
Cited
US2150077A
Cited
US2241197A
Cited
US2413584A
Cited
US2685151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |