US3453513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine
Assignee: National Research Development Corp UK
•
Filing: 1966-03-10
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Granted: 1969-07-01
•
Expires: 1986-03-10
Abstract
No abstract record available.
Inventors
- 👤 James John Bates
- 👤 Tiruchendurai Viswanat Sridhar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:30
CPC Classifications
H; H02; H02K; H02K13/00; H02K13/14; H01; H01R; H01R39/00; H01R39/02; H01R39/04; H01R39/06; H01R39/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2231607A
Cited
US2595024A
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 |