US2869867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet separating machine
Assignee: Individual
•
Filing: 1954-12-21
•
Granted: 1959-01-20
•
Expires: 1974-12-21
Abstract
No abstract record available.
Inventors
- 👤 Backhouse Headley Townsend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:19
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0816; B65H3/0825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1585368A
Cited
US1777225A
Cited
US2086577A
Cited
US2108702A
Cited
US2085612A
Cited
US2215458A
Cited
US2214088A
Cited
US2406766A
Cited
US2454762A
Cited
US2476577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |