Patent US3537072A successfully refreshed from Google Patents.
US2369542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receiver
Assignee: Individual
•
Filing: 1940-01-17
•
Granted: 1945-02-13
•
Expires: 1960-01-17
Abstract
No abstract record available.
Inventors
- 👤 Dietrich Hans Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:43
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30; H03J7/305
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) | 1948-02-13 | 1948-08-14 | 1949-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-13 | 1952-08-14 | 1953-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-13 | 1956-08-14 | 1957-02-13 | $7700.00 | Window Closed / Lapsed |