Patent US1248448A successfully refreshed from Google Patents.
US1248448A
Expired / Lapsed
US
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Assignee: Westinghouse Electric Corp
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Filing: 1915-04-12
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Granted: 1917-12-04
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Expires: 1935-04-12
Abstract
No abstract record available.
Inventors
- 👤 James M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0486; F16B2/00; F16B2/02; F16B2/06; F16B2/08; A; A01; A01B; A01B35/00; A01B35/20; A01B35/22; A01B35/225; F16B7/0493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-12-03 | 1921-06-04 | 1921-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-03 | 1925-06-04 | 1925-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-03 | 1929-06-04 | 1929-12-04 | $7700.00 | Window Closed / Lapsed |