US2562450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse cutoff device
Assignee: Sperry Products Inc
•
Filing: 1947-07-05
•
Granted: 1951-07-31
•
Expires: 1967-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph B De Lano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/36; G01N29/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2273193A
Cited
US2405552A
Cited
US2398701A
Cited
US2413182A
Cited
US2454132A
Cited
US2412710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |