US2621279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated crib bottom
Assignee: Individual
•
Filing: 1948-09-21
•
Granted: 1952-12-09
•
Expires: 1968-09-21
Abstract
No abstract record available.
Inventors
- 👤 Max C Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:56
CPC Classifications
A; A47; A47D; A47D7/00; A47D7/01; A47D7/02; A47C; A47C21/00; A47C21/04; A47C21/048; A47D15/00; A47D9/00; A47D9/012; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |