US3445631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety system for an electrically heated blanket
Assignee: INDOHEEM NV
•
Filing: 1966-03-14
•
Granted: 1969-05-20
•
Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 August E F Fickweiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:36
CPC Classifications
H; H02; H02H; H02H7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2782290A
Cited
US2851574A
Cited
US3143640A
Cited
US3270184A
Cited
US3213329A
Cited
US3330936A
Cited
GB1030583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |