US2975260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heater control circuits
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1958-04-14
•
Granted: 1961-03-14
•
Expires: 1978-04-14
Abstract
No abstract record available.
Inventors
- 👤 Frank N Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:33
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2126398A
Cited
US2522521A
Cited
US2801298A
Cited
US2751549A
Cited
US2870310A
Cited
US2932714A
Cited
US2872556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |