Patent US1847728A successfully refreshed from Google Patents.
US1847728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade slope indicator
Assignee: INSLEY MANUFACTURING Co
•
Filing: 1931-08-12
•
Granted: 1932-03-01
•
Expires: 1951-08-12
Abstract
No abstract record available.
Inventors
- 👤 Carl G Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:57
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/26; Y; Y10; Y10S; Y10S116/00; Y10S116/13; Y10S37/00; Y10S37/906
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) | 1935-03-01 | 1935-08-31 | 1936-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-01 | 1939-08-31 | 1940-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-01 | 1943-08-31 | 1944-03-01 | $7700.00 | Window Closed / Lapsed |