Patent US1327777A successfully refreshed from Google Patents.
US1819992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window sash operating mechanism
Assignee: NAPOLEON MATHIEU
•
Filing: 1930-11-06
•
Granted: 1931-08-18
•
Expires: 1950-11-06
Abstract
No abstract record available.
Inventors
- 👤 Vallee Joseph Alphanse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/38; E05F11/382; E05D; E05D13/00; E05D13/10; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55
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) | 1934-08-17 | 1935-02-16 | 1935-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-17 | 1939-02-16 | 1939-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-17 | 1943-02-16 | 1943-08-18 | $7700.00 | Window Closed / Lapsed |