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US2952408A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1955-05-04
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Granted: 1960-09-13
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Expires: 1975-05-04
Abstract
No abstract record available.
Inventors
- 👤 Henry B O Davis
- 👤 Robert A Meyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:03
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2522957A
Cited
US2439324A
Cited
US2685000A
Cited
US2674409A
Cited
US2726331A
Cited
US2695955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |