Patent US2869121A successfully refreshed from Google Patents.
US2869121A
Expired / Lapsed
US
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Synchronization system
Assignee: Martin Co
•
Filing: 1950-09-18
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Granted: 1959-01-13
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Expires: 1970-09-18
Abstract
No abstract record available.
Inventors
- 👤 Milton J Minneman
- 👤 Jr Arthur S Westneat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:56
CPC Classifications
H; H03; H03D; H03D13/00; H03D13/005; H03D13/006; G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S1/24; H03D13/007; H03D13/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2226459A
Cited
US2419525A
Cited
US2429636A
Cited
US2530528A
Cited
US2484352A
Cited
US2514369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |