US2124003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft construction
Assignee: Glenn L Martin Co
•
Filing: 1937-09-22
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Granted: 1938-07-19
•
Expires: 1957-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jr James S Mcdonnell
- 👤 Drew M Helwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:08
CPC Classifications
B; B64; B64D; B64D10/00; B64D11/00; B64D11/06; B64D11/0639; B64D11/0641; Y; Y02; Y02T; Y02T50/00; Y02T50/40
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) | 1941-07-18 | 1942-01-17 | 1942-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-18 | 1946-01-17 | 1946-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-18 | 1950-01-17 | 1950-07-19 | $7700.00 | Window Closed / Lapsed |