Patent US2517539A successfully refreshed from Google Patents.
Patent US2694134A successfully refreshed from Google Patents.
US2694134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating element
Assignee: Automatic Devices Corp
•
Filing: 1952-10-02
•
Granted: 1954-11-09
•
Expires: 1972-10-02
Abstract
No abstract record available.
Inventors
- 👤 Youhouse Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:41
CPC Classifications
F; F23; F23Q; F23Q7/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US550686A
Cited
US851403A
Cited
US904467A
Cited
US904524A
Cited
US972811A
Cited
US2062701A
Cited
US2554743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |