Patent US135976A successfully refreshed from Google Patents.
US135976A
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US
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Improvement in cut-offs for fire-plug systems
Assignee: —
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Filing: —
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Granted: 1873-02-18
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Expires: 1890-02-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:22
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/1223; E; E03; E03B; E03B7/00; E03B7/02; E03B7/07; E03B7/071; Y; Y02; Y02A; Y02A20/00; Y02A20/15; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995; Y10T137/701; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T137/8593
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) | 1876-02-18 | 1876-08-19 | 1877-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-02-18 | 1880-08-19 | 1881-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-02-18 | 1884-08-19 | 1885-02-18 | $7700.00 | Window Closed / Lapsed |