US2707223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistor
Assignee: Individual
•
Filing: 1949-06-15
•
Granted: 1955-04-26
•
Expires: 1969-06-15
Abstract
No abstract record available.
Inventors
- 👤 Hans E Hollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:29
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H01C; H01C7/00; H01C7/10; H01G; H01G7/00; H01G7/02; Y; Y10; Y10S; Y10S52/00; Y10S52/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325889A
Cited
GB190122142A
Cited
US1822742A
Cited
US1919053A
Cited
US1989187A
Cited
US2418516A
Cited
US2532157A
Cited
US2469569A
Cited
US2500953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |