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Patent US2487156A successfully refreshed from Google Patents.
US2487156A
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High-temperature responsive device
Assignee: Akzo Nobel UK PLC
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Filing: 1945-09-15
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Granted: 1949-11-08
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Expires: 1965-09-15
Abstract
No abstract record available.
Inventors
- 👤 William G Luttge
- 👤 Frank T Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1730080A
Cited
US1706850A
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US1773114A
Cited
US1833383A
Cited
US2074960A
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US2073611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |