US1112495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex-pressure electric pump-governor.
Assignee: Westinghouse Air Brake Co
•
Filing: 1911-04-11
•
Granted: 1914-10-06
•
Expires: 1931-04-11
Abstract
No abstract record available.
Inventors
- 👤 Walter V Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:15
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; F; F15; F15B; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30525
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1917-10-05 | 1918-04-06 | 1918-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-10-05 | 1922-04-06 | 1922-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-10-05 | 1926-04-06 | 1926-10-06 | $7700.00 | Window Closed / Lapsed |