Patent US3467325A successfully refreshed from Google Patents.
US3467325A
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Frequency measuring apparatus
Assignee: Owens Corning
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Filing: 1966-11-03
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Granted: 1969-09-16
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 William C Trethewey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:00
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02; B; B65; B65H; B65H59/00; B65H59/38; B65H59/384; B65H59/385; C; C03; C03B; C03B37/00; C03B37/07; G01K; G01K7/00; G01K7/32; G05; G05D; G05D23/00; G05D23/19; G05D23/1917; G05D23/20; G05D23/22; B65H2515/00; B65H2515/40; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/312; B65H2701/3122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |