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Patent US2016839A successfully refreshed from Google Patents.
US2016839A
Expired / Lapsed
US
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Lighting device for gas burners
Assignee: W J SCHOENBERGER CO
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Filing: 1934-02-23
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Granted: 1935-10-08
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Expires: 1954-02-23
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Schoenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:40
CPC Classifications
F; F23; F23Q; F23Q9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-10-07 | 1939-04-08 | 1939-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-07 | 1943-04-08 | 1943-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-07 | 1947-04-08 | 1947-10-08 | $7700.00 | Window Closed / Lapsed |