US1649809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling sheet-metal resistance units
Assignee: UNION ELECTRIC MANUFACTURING Co
•
Filing: 1927-07-05
•
Granted: 1927-11-22
•
Expires: 1947-07-05
Abstract
No abstract record available.
Inventors
- 👤 Harry E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:54
CPC Classifications
H; H01; H01C; H01C3/00; H01C3/10; Y; Y10; Y10S; Y10S29/00; Y10S29/042; Y10T; Y10T29/00; Y10T29/18; Y10T29/185; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49826; Y10T29/49838; Y10T29/53; Y10T29/5313; Y10T29/5327
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) | 1930-11-21 | 1931-05-23 | 1931-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-11-21 | 1935-05-23 | 1935-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-11-21 | 1939-05-23 | 1939-11-22 | $7700.00 | Window Closed / Lapsed |