US2581615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: DOUGLAS YOUNG Inc
•
Filing: 1948-12-07
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Granted: 1952-01-08
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Expires: 1968-12-07
Abstract
No abstract record available.
Inventors
- 👤 Whitelaw Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
A; A47; A47F; A47F7/00; A47F7/02; A47F7/03; B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1098768A
Cited
US1190030A
Cited
US1919262A
Cited
US2380052A
Cited
US2409926A
Cited
US2429962A
Cited
US2490746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |