US1742705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane and radiator therefor
Assignee: Individual
•
Filing: 1922-11-13
•
Granted: 1930-01-07
•
Expires: 1942-11-13
Abstract
No abstract record available.
Inventors
- 👤 Albert S Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:40
CPC Classifications
B; B64; B64D; B64D33/00; B64D33/08; B64D33/10
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) | 1933-01-06 | 1933-07-08 | 1934-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-01-06 | 1937-07-08 | 1938-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-01-06 | 1941-07-08 | 1942-01-07 | $7700.00 | Window Closed / Lapsed |