US2593475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone index
Assignee: SPEED PRODUCTS Co Inc
•
Filing: 1948-03-15
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Granted: 1952-04-22
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Expires: 1968-03-15
Abstract
No abstract record available.
Inventors
- 👤 Hildaur L Neilsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; B; B42; B42F; B42F17/00; B42F17/34
Claims Analysis
Total Claims: 0
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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) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |