Patent US2367659A successfully refreshed from Google Patents.
Patent US2952740A successfully refreshed from Google Patents.
US2952740A
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US
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Assignee: Individual
•
Filing: 1955-02-14
•
Granted: 1960-09-13
•
Expires: 1975-02-14
Abstract
No abstract record available.
Inventors
- 👤 Frank L Montrose
- 👤 Ave Oxford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:42
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/654; H04M1/6545; H04M1/26; H04M1/27; H04M1/274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2032190A
Cited
GB460663A
Cited
US2131565A
Cited
US2335039A
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US2371051A
Cited
US2656417A
Cited
US2579983A
Cited
US2674658A
Cited
US2827515A
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US2661394A
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 |