Patent US2596992A successfully refreshed from Google Patents.
US925673A
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Electrically-controlled valve-operating mechanism.
Assignee: Ingersoll Rand Co
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Filing: 1907-12-17
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Granted: 1909-06-22
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Expires: 1927-12-17
Abstract
No abstract record available.
Inventors
- 👤 Henry Walter Zook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:51
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/10; Y; Y10; Y10S; Y10S16/00; Y10S16/21; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87217; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
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) | 1912-06-21 | 1912-12-21 | 1913-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-06-21 | 1916-12-21 | 1917-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-06-21 | 1920-12-21 | 1921-06-22 | $7700.00 | Window Closed / Lapsed |