US3527199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner apparatus
Assignee: American Gas Association Inc
•
Filing: 1968-04-19
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Granted: 1970-09-08
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Expires: 1988-04-19
Abstract
No abstract record available.
Inventors
- 👤 Edward H Perry
- 👤 John P Mackin Jr
- 👤 Kenneth J Harwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:22
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/08; F24C3/085; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0094
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) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |