US899068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting inflammable gases in air.
Assignee: Individual
•
Filing: 1907-09-09
•
Granted: 1908-09-22
•
Expires: 1927-09-09
Abstract
No abstract record available.
Inventors
- 👤 Arnold Philip
- 👤 Louis J Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; Y; Y10; Y10S; Y10S200/00; Y10S200/16
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) | 1911-09-22 | 1912-03-23 | 1912-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-22 | 1916-03-23 | 1916-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-22 | 1920-03-23 | 1920-09-22 | $7700.00 | Window Closed / Lapsed |