US2761946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heat pen
Assignee: Individual
•
Filing: 1953-04-23
•
Granted: 1956-09-04
•
Expires: 1973-04-23
Abstract
No abstract record available.
Inventors
- 👤 Bronstein Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:52
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1612220A
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US1909061A
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US1988827A
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US2031532A
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US2224583A
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US2213438A
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US2274408A
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US2257376A
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US2346327A
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US2497146A
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US2452259A
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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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |