US3372737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unidirectional heat transmitter
Assignee: US Philips Corp
•
Filing: 1965-09-27
•
Granted: 1968-03-12
•
Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Joachim Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:03
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25B2321/00; F25B2321/02; F25B2321/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703803A
Cited
US1739295A
Cited
US2782782A
Cited
US2949283A
Cited
DE1138129B
Cited
US3112878A
Cited
US3183121A
Cited
US3225820A
Cited
US3177933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |