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US3500367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat detection system
Assignee: Howard J Fremont and Co Inc
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Filing: 1966-03-11
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Granted: 1970-03-10
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Howard J Fremont
- 👤 Philip N Baron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:37
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111708A
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US2891240A
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US2956267A
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US3185974A
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US3284787A
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US3304547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |