US2560784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator cooling system
Assignee: Jack & Heintz Prec Ind Inc
•
Filing: 1948-08-06
•
Granted: 1951-07-17
•
Expires: 1968-08-06
Abstract
No abstract record available.
Inventors
- 👤 Richard E Sears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:15
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE206753C
Cited
GB191121489A
Cited
US1552383A
Cited
GB227557A
Cited
US1685677A
Cited
AT119710B
Cited
US2479233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |