US1359400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater
Assignee: Cutler Hammer Manufacturing Co
•
Filing: 1920-06-22
•
Granted: 1920-11-16
•
Expires: 1940-06-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin N Lightfoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:56
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49089; Y10T29/49091; Y10T29/49098
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) | 1923-11-16 | 1924-05-17 | 1924-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-11-16 | 1928-05-17 | 1928-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-11-16 | 1932-05-17 | 1932-11-16 | $7700.00 | Window Closed / Lapsed |