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US817009A
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Automatic alarm for gas-pipes.
Assignee: JOHN H COLLISTER
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Filing: 1904-11-28
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Granted: 1906-04-03
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Expires: 1924-11-28
Abstract
No abstract record available.
Inventors
- 👤 August L Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:20
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34
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) | 1909-04-02 | 1909-10-02 | 1910-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-04-02 | 1913-10-02 | 1914-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-04-02 | 1917-10-02 | 1918-04-03 | $7700.00 | Window Closed / Lapsed |