Patent US2444477A successfully refreshed from Google Patents.
US2444477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic miniature radio range for student training
Assignee: Individual
•
Filing: 1940-02-26
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Granted: 1948-07-06
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Expires: 1960-02-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond K Stout
- 👤 Carl W Muller
- 👤 Carl J Crane
- 👤 George V Holloman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:08
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1293747A
Cited
US1825462A
Cited
US2119083A
Cited
US2164412A
Cited
US2099857A
Cited
US2179663A
Cited
US2226726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |