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US916831A
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Valve.
Assignee: Allis Chalmers Corp
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Filing: 1907-04-20
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Granted: 1909-03-30
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Expires: 1927-04-20
Abstract
No abstract record available.
Inventors
- 👤 John J Bettinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:35
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/041
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) | 1912-03-29 | 1912-09-28 | 1913-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-29 | 1916-09-28 | 1917-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-29 | 1920-09-28 | 1921-03-30 | $7700.00 | Window Closed / Lapsed |