US2553779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1948-01-08
•
Granted: 1951-05-22
•
Expires: 1968-01-08
Abstract
No abstract record available.
Inventors
- 👤 Mclain Ray
- 👤 Theodore A Fornkahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:42
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/02; H02G1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312705A
Cited
US1050020A
Cited
US1235999A
Cited
US1358357A
Cited
US1995340A
Cited
US1996458A
Cited
US2213604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |