US3471727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cooled electrical machines
Assignee: RTX Corp
•
Filing: 1966-09-22
•
Granted: 1969-10-07
•
Expires: 1986-09-22
Abstract
No abstract record available.
Inventors
- 👤 Edward J Sedlock
- 👤 Charles F Paquette
- 👤 Henry J Selfors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:37
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/20; H02K1/22; H02K1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123747A
Cited
US714881A
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US895894A
Cited
US1301844A
Cited
US2163528A
Cited
US3009072A
Cited
US3188833A
Cited
US3171996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |