Patent US3453552A successfully refreshed from Google Patents.
US3453552A
Expired / Lapsed
US
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Intercept corrector and phase shifter device
Assignee: Milgo Electronic Corp
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Filing: 1965-05-27
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Granted: 1969-07-01
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Expires: 1985-05-27
Abstract
No abstract record available.
Inventors
- 👤 Sang Y Whang
- 👤 Edward Bleckner Jr
- 👤 Burton J Weiss
- 👤 Paul E Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:52
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/16; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/14
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |