US2630868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic rotor blade
Assignee: General Electric Co
•
Filing: 1949-10-29
•
Granted: 1953-03-10
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Francis R Ellenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:48
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0025; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; B64C2027/4733; B64C2027/4736; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2429122A
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GB124253A
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US2111975A
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US2175204A
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US2202042A
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US2182812A
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US2272439A
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US2407867A
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US2361438A
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US2426400A
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US2428970A
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US2484141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |