Patent US2256928A successfully refreshed from Google Patents.
US2256928A
Expired / Lapsed
US
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Box
Assignee: Individual
•
Filing: 1939-12-30
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Granted: 1941-09-23
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Expires: 1959-12-30
Abstract
No abstract record available.
Inventors
- 👤 William R Slack
- 👤 Cyrus E Lomax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:22
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/02; B; B65; B65D; B65D25/00; B65D25/02; B65D25/04; B65D7/00; B65D7/12; B65D7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-09-22 | 1945-03-24 | 1945-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-22 | 1949-03-24 | 1949-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-22 | 1953-03-24 | 1953-09-23 | $7700.00 | Window Closed / Lapsed |