US2629191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravity return bump gate
Assignee: Individual
•
Filing: 1949-08-03
•
Granted: 1953-02-24
•
Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 William H Koch
- 👤 Strom Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:23
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US402501A
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US404391A
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US786084A
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US1237835A
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US1359764A
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AU1360928A
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US1798699A
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US1802599A
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US2076092A
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US2118722A
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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) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |