Patent US2544547A successfully refreshed from Google Patents.
US2544547A
Expired / Lapsed
US
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Electrically heated floor mat
Assignee: Individual
•
Filing: 1949-03-21
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Granted: 1951-03-06
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Expires: 1969-03-21
Abstract
No abstract record available.
Inventors
- 👤 Charles A Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:08
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/16; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395950A
Cited
GB189621617A
Cited
FR498218A
Cited
US1703640A
Cited
US1980734A
Cited
US2015816A
Cited
US1918533A
Cited
US2066511A
Cited
US2222609A
Cited
US2162287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |