Patent US1218252A successfully refreshed from Google Patents.
US1218252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-valve.
Assignee: Sentinel Manufacturing Co Inc
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Filing: 1915-10-18
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Granted: 1917-03-06
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Expires: 1935-10-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph William Gibney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:05
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10
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) | 1920-03-05 | 1920-09-04 | 1921-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-05 | 1924-09-04 | 1925-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-05 | 1928-09-04 | 1929-03-06 | $7700.00 | Window Closed / Lapsed |