Patent US1550520A successfully refreshed from Google Patents.
US1550520A
Expired / Lapsed
US
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Bone saw
Assignee: Individual
•
Filing: 1923-04-02
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Granted: 1925-08-18
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Expires: 1943-04-02
Abstract
No abstract record available.
Inventors
- 👤 William J Drucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:38
CPC Classifications
A; A22; A22B; A22B5/00; A22B5/20; A22B5/203; A22B5/205; A22B5/206; B; B23; B23D; B23D45/00; B23D45/02; B23D45/021; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7755; Y10T83/7763; Y10T83/7768
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) | 1928-08-17 | 1929-02-16 | 1929-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-08-17 | 1933-02-16 | 1933-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-08-17 | 1937-02-16 | 1937-08-18 | $7700.00 | Window Closed / Lapsed |