US3277307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency responsive power transfer relay
Assignee: Garrett Corp
•
Filing: 1963-03-29
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Granted: 1966-10-04
•
Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter L Smeton
- 👤 Verner E Swenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:23
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1859069A
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US2885568A
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US3069558A
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US2998551A
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US3069555A
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US3069556A
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US3209212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |