Patent US1840370A successfully refreshed from Google Patents.
US1840370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet piling mechanism
Assignee: American Rolling Mill Co
•
Filing: 1929-08-23
•
Granted: 1932-01-12
•
Expires: 1949-08-23
Abstract
No abstract record available.
Inventors
- 👤 August W Ryan
- 👤 Frank E Tubbs
- 👤 Terrence W Allsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:13
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/26; B65H29/34; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/114
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1935-01-11 | 1935-07-13 | 1936-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-11 | 1939-07-13 | 1940-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-11 | 1943-07-13 | 1944-01-12 | $7700.00 | Window Closed / Lapsed |