US1448239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens-lapping-tool grinder
Assignee: Individual
•
Filing: 1921-01-03
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Granted: 1923-03-13
•
Expires: 1941-01-03
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Schuessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/06; B24B13/065; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/105
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) | 1926-03-12 | 1926-09-11 | 1927-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-03-12 | 1930-09-11 | 1931-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-03-12 | 1934-09-11 | 1935-03-13 | $7700.00 | Window Closed / Lapsed |