Patent US3361185A successfully refreshed from Google Patents.
US3361185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burners
Assignee: North Western Gas Board
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Filing: 1966-04-15
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Granted: 1968-01-02
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Expires: 1986-04-15
Abstract
No abstract record available.
Inventors
- 👤 Anderson Robert Henry
- 👤 Rann Cyril Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:21
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/66; F23D14/20; F23D14/22; Y; Y02; Y02E; Y02E20/00; Y02E20/34
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |