Patent US2839654A successfully refreshed from Google Patents.
US2839654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lunch box with heating unit
Assignee: Individual
•
Filing: 1956-08-07
•
Granted: 1958-06-17
•
Expires: 1976-08-07
Abstract
No abstract record available.
Inventors
- 👤 Richard M Jones
- 👤 Jr Dollin L Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:12
CPC Classifications
A; A47; A47J; A47J47/00; A47J47/14; A47J41/00; A47J41/0038; A47J41/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US400752A
Cited
US1411032A
Cited
US2019426A
Cited
US2214632A
Cited
US2274285A
Cited
US2458837A
Cited
US2615541A
Cited
US2513218A
Cited
US2505405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |