US2663153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid medium operated time delay apparatus
Assignee: Specialties Development Corp
•
Filing: 1949-03-10
•
Granted: 1953-12-22
•
Expires: 1969-03-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry C Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:58
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/64; A62C35/645; F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/2564; Y10T137/2572; Y10T137/7722; Y10T137/7781; Y10T137/7782
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |