US2949638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing spectacle templates
Assignee: Individual
•
Filing: 1958-04-02
•
Granted: 1960-08-23
•
Expires: 1978-04-02
Abstract
No abstract record available.
Inventors
- 👤 Cecil T Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:48
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/14; G02C5/143; B; B29; B29D; B29D12/00; B29D12/02; G02C3/00; G02C3/003; G02C5/18; Y; Y10; Y10S; Y10S264/00; Y10S264/30; Y10S264/66; Y10T; Y10T29/00; Y10T29/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |