US2997105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner apparatus
Assignee: Pan American Petroleum Corp
•
Filing: 1956-10-08
•
Granted: 1961-08-22
•
Expires: 1976-10-08
Abstract
No abstract record available.
Inventors
- 👤 Frank E Campion
- 👤 Eugene D Glass
- 👤 John W Kirkpatrick
- 👤 Joseph C Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:48
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/04; E21B36/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1676785A
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US1626940A
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US2159257A
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US2410881A
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US2666480A
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US2584606A
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US2668592A
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US2787906A
Cited
US2776816A
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US2785741A
Cited
US2776013A
Cited
US2887160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |