US1641156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeglass construction
Assignee: BAY STATE OPTICAL Co
•
Filing: 1923-10-19
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Granted: 1927-09-06
•
Expires: 1943-10-19
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Clulee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
G; G02; G02C; G02C5/00; B; B29; B29D; B29D12/00; B29D12/02; Y; Y10; Y10S; Y10S264/00; Y10S264/40; 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) | 1930-09-05 | 1931-03-07 | 1931-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-09-05 | 1935-03-07 | 1935-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-09-05 | 1939-03-07 | 1939-09-06 | $7700.00 | Window Closed / Lapsed |