US980260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve.
Assignee: WILLIAM H CALDWELL
•
Filing: 1910-01-17
•
Granted: 1911-01-03
•
Expires: 1930-01-17
Abstract
No abstract record available.
Inventors
- 👤 Percy W Hodgkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
F; F16; F16K; F16K43/00; F16K43/005; F16K43/006; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87981; Y10T137/87997; Y10T137/88005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1914-01-02 | 1914-07-04 | 1915-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-02 | 1918-07-04 | 1919-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-02 | 1922-07-04 | 1923-01-03 | $7700.00 | Window Closed / Lapsed |