US878461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for burning acetylene or similar gases.
Assignee: Harris Calorific Co
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Filing: 1907-04-08
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Granted: 1908-02-04
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Expires: 1927-04-08
Abstract
No abstract record available.
Inventors
- 👤 John Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:03
CPC Classifications
F; F23; F23C; F23C6/00; F23C6/04; F23C6/045
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) | 1911-02-03 | 1911-08-05 | 1912-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-02-03 | 1915-08-05 | 1916-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-02-03 | 1919-08-05 | 1920-02-04 | $7700.00 | Window Closed / Lapsed |