Patent US730972A successfully refreshed from Google Patents.
US730972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opera-glass.
Assignee: Individual
•
Filing: 1902-10-18
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Granted: 1903-06-16
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Expires: 1922-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jacob W Riglander
- 👤 Bernard H Blank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:56
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/06
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) | 1906-06-15 | 1906-12-15 | 1907-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-06-15 | 1910-12-15 | 1911-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-06-15 | 1914-12-15 | 1915-06-16 | $7700.00 | Window Closed / Lapsed |