US3454746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heating covering
Assignee: Colfico SA
•
Filing: 1966-12-22
•
Granted: 1969-07-08
•
Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Robert Dubois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:47
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; E01C11/265; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735926A
Cited
GB713684A
Cited
US2845519A
Cited
US2844696A
Cited
US2938992A
Cited
US3178560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |