US2831082A
Expired / Lapsed
US
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Assignee: MASON ELECTRIC CORP
•
Filing: 1952-12-11
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Granted: 1958-04-15
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Expires: 1972-12-11
Abstract
No abstract record available.
Inventors
- 👤 Howard F Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:43
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/16; H01H19/00; H01H19/02; H01H19/10; H01H19/11; H01H19/20; H01H19/22; H01H19/54; H01H19/56; H01H21/00; H01H21/02; H01H21/18; H01H21/36; H01H21/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190823423A
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US1921765A
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US2163919A
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GB571395A
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US2625619A
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US2565863A
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US2505548A
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US2708227A
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US2707741A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |