US2967677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for launching balloons
Assignee: Winzen Res Inc
•
Filing: 1957-05-13
•
Granted: 1961-01-10
•
Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Otto C Winzen
- 👤 Raymond C Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:27
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/58; B64B1/62; B64D; B64D1/00; B64D1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1572889A
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US1894954A
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GB555831A
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US2551609A
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US2463517A
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US2582113A
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US2628307A
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US2798683A
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US2756948A
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US2764369A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |