US2472623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air transportation of small parcels
Assignee: Glenn L Martin Co
•
Filing: 1945-11-10
•
Granted: 1949-06-07
•
Expires: 1965-11-10
Abstract
No abstract record available.
Inventors
- 👤 Richard B Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
B; B64; B64D; B64D9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1792480A
Cited
US2115424A
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US2107216A
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US2326263A
Cited
US2334124A
Cited
US2370799A
Cited
US2378159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |