US2550338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for mailboxes or the like
Assignee: Individual
•
Filing: 1947-01-16
•
Granted: 1951-04-24
•
Expires: 1967-01-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Dunagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:57
CPC Classifications
A; A47; A47G; A47G29/00; A47G29/12; A47G29/1209; A47G29/1216; E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/65; G; G09; G09F; G09F7/00; G09F7/18; G09F7/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |