Patent US2497676A successfully refreshed from Google Patents.
US2497676A
Expired / Lapsed
US
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Infrared ray equipment
Assignee: Individual
•
Filing: 1946-03-27
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Granted: 1950-02-14
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Expires: 1966-03-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Lashells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US908838A
Cited
US1400859A
Cited
US2042855A
Cited
US2263866A
Cited
US2317426A
Cited
US2355459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |