US2648924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Label structure
Assignee: Individual
•
Filing: 1949-12-16
•
Granted: 1953-08-18
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Brewster Ernest Billings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:09
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; Y; Y10; Y10S; Y10S446/00; Y10S446/901; Y10T; Y10T428/00; Y10T428/14; Y10T428/1419
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1455579A
Cited
US1543430A
Cited
US1922767A
Cited
US2030135A
Cited
US2205956A
Cited
US2307406A
Cited
US2367608A
Cited
US2475698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |