Patent US2620199A successfully refreshed from Google Patents.
US2620199A
Expired / Lapsed
US
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Dirigible sled
Assignee: Individual
•
Filing: 1950-03-23
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Granted: 1952-12-02
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Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 Maly Jaroslav
- 👤 Kodes Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:53
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/02; B62B13/06; B62B13/08; B62B13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US367280A
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DE477734C
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US678651A
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AT42433B
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CH49821A
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CH137909A
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US1888857A
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US2099731A
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US2317048A
Cited
US2323847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |