US2486278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner having removable cap structures
Assignee: Harper Wyman Co
•
Filing: 1944-04-28
•
Granted: 1949-10-25
•
Expires: 1964-04-28
Abstract
No abstract record available.
Inventors
- 👤 Philip S Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:00
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1620071A
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US1144040A
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US1805562A
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US1843361A
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US1923337A
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US2009271A
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US2107575A
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US2386113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |