US3515915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turning pendulum mechanism
Assignee: Individual
•
Filing: 1969-04-08
•
Granted: 1970-06-02
•
Expires: 1989-04-08
Abstract
No abstract record available.
Inventors
- 👤 Gustav Stein
- 👤 Margerit Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:01
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02; H02K33/10; G; G04; G04C; G04C3/00; G04C3/02; G04C3/033; G04C3/0335
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1619677A
Cited
US1961320A
Cited
US2129882A
Cited
US2428247A
Cited
US2617951A
Cited
US2724063A
Cited
US2796728A
Cited
US2873572A
Cited
US3207965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |