US2430862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scope
Assignee: CARSCALLEN
•
Filing: 1945-07-07
•
Granted: 1947-11-18
•
Expires: 1965-07-07
Abstract
No abstract record available.
Inventors
- 👤 Henry M Carscallen
- 👤 Ray F Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739954A
Cited
US1731088A
Cited
DE552318C
Cited
US1994519A
Cited
US1862087A
Cited
US2087082A
Cited
US2187574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |