US2529660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand and power drive
Assignee: COLONIAL RADIO Corp
•
Filing: 1944-10-25
•
Granted: 1950-11-14
•
Expires: 1964-10-25
Abstract
No abstract record available.
Inventors
- 👤 Alvin D Meyer
- 👤 Carl F Carlzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:31
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1723399A
Cited
USRE21282E
Cited
US2184032A
Cited
US2284353A
Cited
US2208453A
Cited
US2285540A
Cited
US2348460A
Cited
US2352140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |