US2555513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic time-delay mechanism
Assignee: Individual
•
Filing: 1948-02-16
•
Granted: 1951-06-05
•
Expires: 1968-02-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Edmund O Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:26
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/30; B65D85/38; G; G04; G04F; G04F1/00; G04F1/04; G04F1/06; G04F1/066; H; H01; H01H; H01H36/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR394858A
Cited
US1359333A
Cited
US1658699A
Cited
GB289771A
Cited
US1725554A
Cited
US1937562A
Cited
US2425770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |