Patent US2390243A successfully refreshed from Google Patents.
Patent US2887883A successfully refreshed from Google Patents.
US2887883A
Expired / Lapsed
US
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Solenoid construction
Assignee: Individual
•
Filing: 1958-02-10
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Granted: 1959-05-26
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Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Zipper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:42
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/17; Y; Y10; Y10T; Y10T74/00; Y10T74/11
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |