US3431687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced article
Assignee: HERBERT C FISCHER
•
Filing: 1965-06-16
•
Granted: 1969-03-11
•
Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Fischer
- 👤 Herbert C Fischer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:39
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/02; B24D5/04; B24D7/00; B24D7/02; B24D7/04; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/218; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2800754A
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US2826016A
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US3234619A
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US3141271A
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US3262230A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |