US2639650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated runway construction
Assignee: C N HOUSH
•
Filing: 1950-06-24
•
Granted: 1953-05-26
•
Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robishaw Alces Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/08; E01C9/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR851219A
Cited
US1647515A
Cited
GB306673A
Cited
US2022622A
Cited
US1900721A
Cited
FR854207A
Cited
US2180504A
Cited
FR850324A
Cited
FR857815A
Cited
US2278554A
Cited
US2407059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |