US2842865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impingement dry box assembly
Assignee: UNICORN ENGINEERING Corp
•
Filing: 1956-10-19
•
Granted: 1958-07-15
•
Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Enkelmann Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:02
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/02; G03D15/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1996020A
Cited
US2456301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |