US686930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of building up sheets of mica.
Assignee: MICA MACHINE Co
•
Filing: 1901-04-24
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Granted: 1901-11-19
•
Expires: 1921-04-24
Abstract
No abstract record available.
Inventors
- 👤 Richard W Heard
- 👤 Richard A L Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:04
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; Y; Y10; Y10T; Y10T156/00; Y10T156/11; Y10T156/1111; Y10T156/1116
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) | 1904-11-18 | 1905-05-20 | 1905-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-11-18 | 1909-05-20 | 1909-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-11-18 | 1913-05-20 | 1913-11-19 | $7700.00 | Window Closed / Lapsed |