US2248661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternator
Assignee: HAMMOND INSTR CO
•
Filing: 1938-09-27
•
Granted: 1941-07-08
•
Expires: 1958-09-27
Abstract
No abstract record available.
Inventors
- 👤 Charles A Culver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:19
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-07-07 | 1945-01-06 | 1945-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-07 | 1949-01-06 | 1949-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-07 | 1953-01-06 | 1953-07-08 | $7700.00 | Window Closed / Lapsed |