US2819499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blind unit
Assignee: Individual
•
Filing: 1953-12-22
•
Granted: 1958-01-14
•
Expires: 1973-12-22
Abstract
No abstract record available.
Inventors
- 👤 Abramson Oscar
- 👤 Abramson Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
B; B60; B60J; B60J1/00; B60J1/20; B60J1/2011; B60J1/2088
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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |