US1465424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing rings of celluloid for eyeglasses and spectacles
Assignee: NEW JERSEY OPTICAL CO
•
Filing: 1922-08-01
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Granted: 1923-08-21
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Expires: 1942-08-01
Abstract
No abstract record available.
Inventors
- 👤 Edgar R Durgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
B; B29; B29D; B29D12/00; B29D12/02; B29C; B29C53/00; B29C53/02; B29C53/04; B29C53/043; B29C69/00; B29C69/001; B29C69/002; B29C69/003; Y; Y10; Y10S; Y10S425/00; Y10S425/042; Y10T; Y10T29/00; Y10T29/31
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) | 1926-08-20 | 1927-02-19 | 1927-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-08-20 | 1931-02-19 | 1931-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-08-20 | 1935-02-19 | 1935-08-21 | $7700.00 | Window Closed / Lapsed |