US1213611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machinery.
Assignee: Submarine Signal Co
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Filing: 1915-10-04
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Granted: 1917-01-23
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Expires: 1935-10-04
Abstract
No abstract record available.
Inventors
- 👤 Reginald A Fessenden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1823; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/08
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) | 1920-01-23 | 1920-07-24 | 1921-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-01-23 | 1924-07-24 | 1925-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-01-23 | 1928-07-24 | 1929-01-23 | $7700.00 | Window Closed / Lapsed |