Patent US1730408A successfully refreshed from Google Patents.
US1730408A
Expired / Lapsed
US
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Balance valve
Assignee: Individual
•
Filing: 1928-04-04
•
Granted: 1929-10-08
•
Expires: 1948-04-04
Abstract
No abstract record available.
Inventors
- 👤 Collins Palmer
- 👤 Abbot A Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:28
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643; Y10T137/794
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) | 1932-10-07 | 1933-04-08 | 1933-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-10-07 | 1937-04-08 | 1937-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-10-07 | 1941-04-08 | 1941-10-08 | $7700.00 | Window Closed / Lapsed |