Patent US1254253A successfully refreshed from Google Patents.
US1254253A
Expired / Lapsed
US
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Lens-grooving machine.
Assignee: Individual
•
Filing: 1915-08-28
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Granted: 1918-01-22
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Expires: 1935-08-28
Abstract
No abstract record available.
Inventors
- 👤 Frank B Marchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/14
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) | 1921-01-21 | 1921-07-23 | 1922-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-01-21 | 1925-07-23 | 1926-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-01-21 | 1929-07-23 | 1930-01-22 | $7700.00 | Window Closed / Lapsed |