Patent US3221912A successfully refreshed from Google Patents.
US3221912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift truck arrangement for system of handling bagged mail
Assignee: Individual
•
Filing: 1964-12-30
•
Granted: 1965-12-07
•
Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Mcwilliams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/36; B60P1/38; B65; B65G; B65G67/00; B65G67/02; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/19; B66F9/195
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1506657A
Cited
US1637420A
Cited
US2394692A
Cited
US2396090A
Cited
US2549202A
Cited
US2496039A
Cited
US2605910A
Cited
US2742167A
Cited
US2813638A
Cited
US2843278A
Cited
US2959313A
Cited
US2918186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |