US2477615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse delineator
Assignee: Unisys Corp
•
Filing: 1944-01-04
•
Granted: 1949-08-02
•
Expires: 1964-01-04
Abstract
No abstract record available.
Inventors
- 👤 Eric J Isbister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2178074A
Cited
US2121359A
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US2203528A
Cited
US2244513A
Cited
US2241256A
Cited
USRE22390E
Cited
US2284219A
Cited
US2350069A
Cited
US2373145A
Cited
US2431766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |