US3075138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator
Assignee: Crane Co
•
Filing: 1959-01-19
•
Granted: 1963-01-22
•
Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 William F Croft
- 👤 Benjamin C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/34; G05F1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1654948A
Cited
US1701379A
Cited
US2436788A
Cited
US2377152A
Cited
US2650341A
Cited
US2651020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |