US2889445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated mat
Assignee: Individual
•
Filing: 1955-03-28
•
Granted: 1959-06-02
•
Expires: 1975-03-28
Abstract
No abstract record available.
Inventors
- 👤 Herman B Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:41
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/017; H05B2203/026; H05B2203/032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1521241A
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US1860934A
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US2057124A
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US2152934A
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US2084468A
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US2138217A
Cited
US2575987A
Cited
US2617916A
Cited
US2702334A
Cited
US2737571A
Cited
US2781439A
Cited
US2783358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |