Patent US2735149A successfully refreshed from Google Patents.
US2735149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
frank
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/03; G09F3/0305; A; A22; A22C; A22C11/00; A22C11/12; Y; Y10; Y10T; Y10T24/00; Y10T24/15; Y10T24/152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1698531A
Cited
US1654340A
Cited
US1783967A
Cited
US1982281A
Cited
CH181263A
Cited
US2460963A
Cited
US2406661A
Cited
US2493063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |