US2751990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane ground tug
Assignee: Boeing Co
•
Filing: 1950-11-13
•
Granted: 1956-06-26
•
Expires: 1970-11-13
Abstract
No abstract record available.
Inventors
- 👤 Donald W Finlay
- 👤 Raymond E Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:49
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/22; B64F1/223; B64F1/225; B64F1/227; Y; Y10; Y10S; Y10S180/00; Y10S180/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE564745C
Cited
GB482057A
Cited
US2145188A
Cited
US2366892A
Cited
US2409552A
Cited
GB576649A
Cited
US2547268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |