Patent US2822460A successfully refreshed from Google Patents.
US2822460A
Expired / Lapsed
US
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Electrical heating devices
Assignee: Individual
•
Filing: 1955-05-02
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Granted: 1958-02-04
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Goldstaub Henry Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:51
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H05B3/565
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075686A
Cited
US2451839A
Cited
US2521540A
Cited
US2585443A
Cited
US2569961A
Cited
US2529914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |