Patent AT208872B successfully refreshed from Google Patents.
US2437201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous electric clock motor
Assignee: Individual
•
Filing: 1947-06-16
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Granted: 1948-03-02
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Expires: 1967-06-16
Abstract
No abstract record available.
Inventors
- 👤 Francis J Landgraf
- 👤 Richard P Landgraf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:43
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/04; H02K19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1959391A
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US2250395A
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GB432492A
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US2018677A
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US2191220A
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US2248285A
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US2313466A
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US2266878A
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US2432573A
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GB558022A
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US2421906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |