Patent US1212992A successfully refreshed from Google Patents.
US1212992A
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US
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Antifriction device.
Assignee: Individual
•
Filing: 1915-10-09
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Granted: 1917-01-16
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Expires: 1935-10-09
Abstract
No abstract record available.
Inventors
- 👤 Adelaide E O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:24
CPC Classifications
A; A47; A47B; A47B88/00; A47B88/40; A47B88/423; A47B88/427; A47B2210/00; A47B2210/0002; A47B2210/0029; A47B2210/0043; Y; Y10; Y10S; Y10S16/00; Y10S16/35
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) | 1920-01-16 | 1920-07-17 | 1921-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-01-16 | 1924-07-17 | 1925-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-01-16 | 1928-07-17 | 1929-01-16 | $7700.00 | Window Closed / Lapsed |