US2474428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern marking letter
Assignee: Individual
•
Filing: 1945-02-12
•
Granted: 1949-06-28
•
Expires: 1965-02-12
Abstract
No abstract record available.
Inventors
- 👤 Ernest T Kindt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:57
CPC Classifications
B; B22; B22C; B22C7/00; G; G09; G09F; G09F7/00; G09F7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1499744A
Cited
US1519005A
Cited
US1567860A
Cited
GB266183A
Cited
US1831434A
Cited
US1967194A
Cited
US1936634A
Cited
US2317861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |