US3544844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocked operation control and overload protective circuit system
Assignee: Hipotronics Inc
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Filing: 1969-07-11
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Granted: 1970-12-01
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Expires: 1989-07-11
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Pellegrino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:28
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/004; B05B5/00; B05B5/08; B05B5/10; H; H02; H02H; H02H3/00; H02H3/08; H02H3/087; H02H7/00; H02H7/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |