Patent US1471773A successfully refreshed from Google Patents.
US1471773A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1921-11-14
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Granted: 1923-10-23
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Expires: 1941-11-14
Abstract
No abstract record available.
Inventors
- 👤 Bowen Herbert Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:04
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/66
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) | 1926-10-22 | 1927-04-23 | 1927-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-22 | 1931-04-23 | 1931-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-22 | 1935-04-23 | 1935-10-23 | $7700.00 | Window Closed / Lapsed |