US2495867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing fire detector and like elements
Assignee: PETCAR RES CORP
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Filing: 1948-01-14
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Granted: 1950-01-31
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Expires: 1968-01-14
Abstract
No abstract record available.
Inventors
- 👤 Melville F Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |