US2920845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane moving device
Assignee: Shepherd Machinery Co
•
Filing: 1955-07-22
•
Granted: 1960-01-12
•
Expires: 1975-07-22
Abstract
No abstract record available.
Inventors
- 👤 Daniel A Palmiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:00
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/22; B64F1/223; B64F1/224; B64F1/225; B64F1/226; Y; Y10; Y10S; Y10S180/00; Y10S180/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US567445A
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US1313537A
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US1764851A
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US1866380A
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US2409552A
Cited
US2441801A
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US2539010A
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DE834486C
Cited
US2626002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |