US1215668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety tank-lock.
Assignee: Individual
•
Filing: 1915-01-25
•
Granted: 1917-02-13
•
Expires: 1935-01-25
Abstract
No abstract record available.
Inventors
- 👤 John Lees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:45
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/06; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0352; Y10T137/7069; Y10T137/7131; Y10T137/7225; Y10T137/7256; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5615; Y10T70/5619; Y10T70/5757; Y10T70/5765; Y10T70/577
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) | 1920-02-13 | 1920-08-14 | 1921-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-13 | 1924-08-14 | 1925-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-13 | 1928-08-14 | 1929-02-13 | $7700.00 | Window Closed / Lapsed |