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US2457503A
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Reflecting vapor lamp
Assignee: Individual
•
Filing: 1946-09-20
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Granted: 1948-12-28
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Expires: 1966-09-20
Abstract
No abstract record available.
Inventors
- 👤 Grover C Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:15
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312310A
Cited
US2201390A
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US2322421A
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US2279907A
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US2355258A
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US2346522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |