US3461806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating electric motor
Assignee: Individual
•
Filing: 1968-08-30
•
Granted: 1969-08-19
•
Expires: 1988-08-30
Abstract
No abstract record available.
Inventors
- 👤 Maurice Barthalon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:28
CPC Classifications
F; F04; F04B; F04B35/00; F04B35/04; F04B35/045; H; H02; H02K; H02K33/00; H02K33/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1934994A
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US2430758A
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US2721024A
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US2721453A
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US2839237A
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US2833220A
Cited
US2954917A
Cited
US3119940A
Cited
US3196797A
Cited
US3221798A
Cited
US3134938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |