US3453494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutralizing transformers
Assignee: GORDON Y R ALLEN
•
Filing: 1968-06-19
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Granted: 1969-07-01
•
Expires: 1988-06-19
Abstract
No abstract record available.
Inventors
- 👤 Gordon Y R Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:01
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2823; H01F27/2828; H02; H02H; H02H9/00; H02H9/08; H03; H03H; H03H7/00; H03H7/01; H03H7/0123; H04; H04B; H04B3/00; H04B3/02; H04B3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3196316A
Cited
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 |