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Patent US1743685A successfully refreshed from Google Patents.
US1743685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety gas-valve lock
Assignee: Individual
•
Filing: 1929-01-08
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Granted: 1930-01-14
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Expires: 1949-01-08
Abstract
No abstract record available.
Inventors
- 👤 Platt John White
- 👤 Kramer Arthur Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:53
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/022; F16K35/025
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) | 1933-01-13 | 1933-07-15 | 1934-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-01-13 | 1937-07-15 | 1938-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-01-13 | 1941-07-15 | 1942-01-14 | $7700.00 | Window Closed / Lapsed |