US3500079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic machines
Assignee: Individual
•
Filing: 1966-11-14
•
Granted: 1970-03-10
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Maurice Barthalon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:00
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12; H02K33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123747A
Cited
US1544010A
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US2796542A
Cited
US3070024A
Cited
US3234782A
Cited
US3119940A
Cited
US3196797A
Cited
US3156405A
Cited
US3238397A
Cited
US3312842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |