US2795430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box for storing matrices
Assignee: Individual
•
Filing: 1952-11-17
•
Granted: 1957-06-11
•
Expires: 1972-11-17
Abstract
No abstract record available.
Inventors
- 👤 Broad Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:27
CPC Classifications
B; B41; B41B; B41B7/00; B41B7/02; B41B7/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US373086A
Cited
US628442A
Cited
US658030A
Cited
US830188A
Cited
FR428305A
Cited
US1334540A
Cited
US1516960A
Cited
US1476009A
Cited
US1625285A
Cited
US1759016A
Cited
US2079968A
Cited
US2154728A
Cited
US2397740A
Cited
CH251811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |