US2821910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master ejecting mechanism for duplicators
Assignee: AB Dick Co
•
Filing: 1954-05-10
•
Granted: 1958-02-04
•
Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Mazzio
- 👤 George P Niesen
- 👤 George E Engelstad
- 👤 Bois Edgar H Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:53
CPC Classifications
B; B41; B41L; B41L11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003469A
Cited
US2002321A
Cited
US2231639A
Cited
US2185188A
Cited
US2238359A
Cited
US2262511A
Cited
US2380744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |