Patent US193515A successfully refreshed from Google Patents.
US193515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in gas-governors
Assignee: —
•
Filing: —
•
Granted: 1877-07-24
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Expires: 1894-07-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:20
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7797; Y10T137/7805; Y10T137/7806
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) | 1880-07-23 | 1881-01-22 | 1881-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-07-23 | 1885-01-22 | 1885-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-07-23 | 1889-01-22 | 1889-07-24 | $7700.00 | Window Closed / Lapsed |