US945244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible spacing mechanism for type-writers.
Assignee: P W O'BRIEN
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Filing: 1908-08-03
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Granted: 1910-01-04
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Expires: 1928-08-03
Abstract
No abstract record available.
Inventors
- 👤 Wallace D Mcgill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:43
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/18; B41J19/20; B41J19/32
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) | 1913-01-03 | 1913-07-05 | 1914-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-01-03 | 1917-07-05 | 1918-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-01-03 | 1921-07-05 | 1922-01-04 | $7700.00 | Window Closed / Lapsed |