Patent US2806160A successfully refreshed from Google Patents.
US2806160A
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Rotor and method of making the same
Assignee: Keefe & Merritt Co O
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Filing: 1952-10-27
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Granted: 1957-09-10
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Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Maurice W Brainard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:28
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/276
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US198707A
Cited
GB198725A
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US1827323A
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FR786004A
Cited
DE668436C
Cited
GB478149A
Cited
US2299589A
Cited
US2493102A
Cited
US2475776A
Cited
US2485474A
Cited
FR970524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |