Patent US3113255A successfully refreshed from Google Patents.
Patent US3544949A successfully refreshed from Google Patents.
US3544949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip ring device
Assignee: VLADIMIR VASILIEVICH RYNZANTSE
•
Filing: 1967-10-12
•
Granted: 1970-12-01
•
Expires: 1987-10-12
Abstract
No abstract record available.
Inventors
- 👤 Lev Emelianovich Panasjuk
- 👤 Arnold Karlovich Kupits
- 👤 Evgeny Mikhailovich Romanov
- 👤 Veniamin Dmitrievich Ageev
- 👤 Vladimir Vasilievic Rynzantsev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:48
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/64
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2179693A
Cited
US2820207A
Cited
US3058082A
Cited
US2937224A
Cited
US2981916A
Cited
US3400357A
Cited
US3408610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |