Patent US2447173A successfully refreshed from Google Patents.
US2447173A
Expired / Lapsed
US
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Air charger
Assignee: Individual
•
Filing: 1945-12-21
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Granted: 1948-08-17
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Expires: 1965-12-21
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:47
CPC Classifications
E; E03; E03B; E03B11/00; E03B11/02; E03B11/06; E03B11/08; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/3137; Y10T137/8593; Y10T137/85978; Y10T137/86035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1612017A
Cited
US2416345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |