Patent US893939A successfully refreshed from Google Patents.
US893939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head for insulating-machines.
Assignee: Individual
•
Filing: 1904-12-30
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Granted: 1908-07-21
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Expires: 1924-12-30
Abstract
No abstract record available.
Inventors
- 👤 Vernon Royle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:59
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445
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) | 1911-07-21 | 1912-01-20 | 1912-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-07-21 | 1916-01-20 | 1916-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-07-21 | 1920-01-20 | 1920-07-21 | $7700.00 | Window Closed / Lapsed |