Patent US2479997A successfully refreshed from Google Patents.
US2479997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved tank
Assignee: GLASCOTE PRODUCTS Inc
•
Filing: 1948-07-23
•
Granted: 1949-08-23
•
Expires: 1968-07-23
Abstract
No abstract record available.
Inventors
- 👤 Carl S Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:48
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1652510A
Cited
US1939495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |