US2580729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alphabet
Assignee: —
•
Filing: —
•
Granted: 1952-01-01
•
Expires: 1969-01-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
B; B41; B41J; B41J1/00; B41J1/22; B41J1/32; B41J1/40; B41J1/42; G; G06; G06K; G06K1/00; G06K1/12; G06K1/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2002772A
Cited
US1951592A
Cited
US2146307A
Cited
US2281851A
Cited
US2247916A
Cited
US2359857A
Cited
US2338173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |