US2661784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for
Assignee: —
•
Filing: —
•
Granted: 1953-12-08
•
Expires: 1970-12-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:20
CPC Classifications
A; A23; A23N; A23N5/00; A23B; A23B2/00; A23B2/60; B; B02; B02C; B02C19/00; B02C19/18; B02C2019/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1250140A
Cited
US2200405A
Cited
US2248368A
Cited
US2318265A
Cited
US2308860A
Cited
US2365576A
Cited
US2400113A
Cited
US2534362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |