US3473041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standby electrical system and means for detecting defects therein
Assignee: HAMPDEN ENG CO
•
Filing: 1966-10-10
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Granted: 1969-10-14
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Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Flynn
- 👤 Stanley T Bandoski Jr
- 👤 William R Clow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
H; H02; H02J; H02J9/00; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/46; H01H2300/00; H01H2300/018; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y04; Y04S; Y04S20/00; Y04S20/20
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) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |