US2239800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sintered articles
Assignee: Individual
•
Filing: 1939-01-30
•
Granted: 1941-04-29
•
Expires: 1959-01-30
Abstract
No abstract record available.
Inventors
- 👤 Vogt Hans
- 👤 Klotz Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:59
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/114; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12153; Y10T428/1216
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) | 1944-04-28 | 1944-10-28 | 1945-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-28 | 1948-10-28 | 1949-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-28 | 1952-10-28 | 1953-04-29 | $7700.00 | Window Closed / Lapsed |