Patent US1744709A successfully refreshed from Google Patents.
US1744709A
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US
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Vane formation for rotary elements
Assignee: Individual
•
Filing: 1921-01-29
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Granted: 1930-01-21
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Expires: 1941-01-29
Abstract
No abstract record available.
Inventors
- 👤 Moody Lewis Ferry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:16
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/12; F03B3/121; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-01-20 | 1933-07-22 | 1934-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-01-20 | 1937-07-22 | 1938-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-01-20 | 1941-07-22 | 1942-01-21 | $7700.00 | Window Closed / Lapsed |