Patent US3253572A successfully refreshed from Google Patents.
US3253572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat detection sensor
Assignee: Individual
•
Filing: 1961-03-09
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Granted: 1966-05-31
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Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:03
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A CONTINUOUS-TYPE HEAT SENSOR COMPRISING AN IMPERFORATE NARROW DIAMETER WIRE-LIKE GENERALLY TUBULAR ENCLOSURE, A BLOWING AGENT, COMPRISING A SOLID THAT IRREVERSIBLY AND NON-EXPLOSIVELY DECOMPOSES WHEN HEATED INTO LARGE VOLUMES OF GAS, DISPOSED SUBSTANTIALLY UNIFORMLY IN AND ALONG SUBSTANTIALLY THE FULL LENGTH OF SAID ENCLOSURE, MEANS PROVIDING CONTINUOUS PASSAGE FOR GAS THROUGH SAID
Claim 2
Dependent Claim
52 words
A CONTINUOUS-TYPE HEAT SENSOR COMPRISING AN IMPERFORATE NARROW DIAMETER WIRE-LIKE GENERALLY TUBULAR ENCLOSURE, A BLOWING AGENT, COMPRISING A SOLID THAT IRREVERSIBLY AND NON-EXPLOSIVELY DECOMPOSES WHEN HEATED INTO LARGE VOLUMES OF GAS, DISPOSED SUBSTANTIALLY UNIFORMLY IN AND ALONG SUBSTANTIALLY THE FULL LENGTH OF SAID ENCLOSURE, MEANS PROVIDING CONTINUOUS PASSAGE FOR GAS THROUGH SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |