US3497849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensor for radiant heat emission
Assignee: Therm O Disc Inc
•
Filing: 1967-10-30
•
Granted: 1970-02-24
•
Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Donald E Place
- 👤 Donald J Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:01
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/206; F23Q; F23Q1/00; F23Q1/02; F23Q1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2813579A
Cited
US2171895A
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US2483298A
Cited
US2493294A
Cited
US3090423A
Cited
US3062276A
Cited
US3151661A
Cited
US3338288A
Cited
US3312270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |