US2643487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methoff of producing batts of
Assignee: —
•
Filing: —
•
Granted: 1953-06-30
•
Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:17
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16; F26B13/18; F26B13/183; F26B13/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2171006A
Cited
US2318243A
Cited
US2428653A
Cited
US2518744A
Cited
US2565941A
Cited
US2526870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |