Patent US2819073A successfully refreshed from Google Patents.
US2819073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding apparatus
Assignee: Aetna Standard Engineering Co
•
Filing: 1955-04-20
•
Granted: 1958-01-07
•
Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Lloyd G Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:06
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0816
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1442718A
Cited
US1457830A
Cited
US2162580A
Cited
US2197817A
Cited
US2661948A
Cited
US2661208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |