Patent US1217920A successfully refreshed from Google Patents.
US1217920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolution-counter.
Assignee: Individual
•
Filing: 1913-06-07
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Granted: 1917-03-06
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Expires: 1933-06-07
Abstract
No abstract record available.
Inventors
- 👤 Henry H Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:27
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/083
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) | 1920-03-05 | 1920-09-04 | 1921-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-05 | 1924-09-04 | 1925-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-05 | 1928-09-04 | 1929-03-06 | $7700.00 | Window Closed / Lapsed |