US2128023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction box conditioner
Assignee: EASTWOOD NEALLEY CORP
•
Filing: 1937-03-08
•
Granted: 1938-08-23
•
Expires: 1957-03-08
Abstract
No abstract record available.
Inventors
- 👤 Harry G Specht
- 👤 Nelson W Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:46
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/002; B24B23/00; B24B23/08; D; D21; D21F; D21F1/00; D21F1/48; D21F1/52; D21F1/523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-08-22 | 1942-02-21 | 1942-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-22 | 1946-02-21 | 1946-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-22 | 1950-02-21 | 1950-08-23 | $7700.00 | Window Closed / Lapsed |