Patent US975444A successfully refreshed from Google Patents.
US975444A
Expired / Lapsed
US
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Regulating device for gas-mixers.
Assignee: AMERICAN OXHYDRIC Co
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Filing: 1908-03-10
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Granted: 1910-11-15
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Expires: 1928-03-10
Abstract
No abstract record available.
Inventors
- 👤 Primo Lulli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:23
CPC Classifications
C; C09; C09K; C09K3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/88046
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) | 1913-11-14 | 1914-05-16 | 1914-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-11-14 | 1918-05-16 | 1918-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-11-14 | 1922-05-16 | 1922-11-15 | $7700.00 | Window Closed / Lapsed |