Patent US3218374A successfully refreshed from Google Patents.
Patent US2685140A successfully refreshed from Google Patents.
US2685140A
Expired / Lapsed
US
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Guide rib runway
Assignee: Individual
•
Filing: 1953-05-18
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Granted: 1954-08-03
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Nedwick Zygmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:12
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/04; A63B23/0405; A63B23/0464; A63B69/00; A63B69/0028; Y; Y10; Y10S; Y10S273/00; Y10S273/25
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) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |