US1770933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of strengthening structural members under load
Assignee: Individual
•
Filing: 1929-05-17
•
Granted: 1930-07-22
•
Expires: 1949-05-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Leake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:04
CPC Classifications
E; E04; E04G; E04G23/00; E04G23/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49618; Y10T29/49718; Y10T29/49732; Y10T29/49739; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/49874
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) | 1933-07-21 | 1934-01-20 | 1934-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-07-21 | 1938-01-20 | 1938-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-07-21 | 1942-01-20 | 1942-07-22 | $7700.00 | Window Closed / Lapsed |