US2783807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form fit heat and cold applicator device
Assignee: Individual
•
Filing: 1955-04-20
•
Granted: 1957-03-05
•
Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Robert R Duffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:21
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/08; A61F2007/0001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US97265A
Cited
US1313021A
Cited
US1433303A
Cited
GB189908353A
Cited
US981388A
Cited
US1433304A
Cited
US1525594A
Cited
US1605141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |