US2611577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: Specialties Development Corp
•
Filing: 1947-12-02
•
Granted: 1952-09-23
•
Expires: 1967-12-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry C Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:03
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/009; F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0853; F16K31/00; F16K31/02; F16K31/06; F16K31/10; F16K31/105; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4857; Y10T137/8593; Y10T137/86493; Y10T137/86847; Y10T137/86855; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US477720A
Cited
US1053327A
Cited
US1076802A
Cited
US1283818A
Cited
US1448941A
Cited
US1688035A
Cited
US1786295A
Cited
US1755057A
Cited
GB340236A
Cited
US2422796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |