US2754355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crepe paper insulating elements
Assignee: Allis Chalmers Corp
•
Filing: 1952-02-08
•
Granted: 1956-07-10
•
Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:16
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/324; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1118446A
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US1500472A
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US1631668A
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US1799580A
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US1944508A
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US1975750A
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US2179381A
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US2354500A
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US2479400A
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US2656290A
Cited
GB680890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |