US3500519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strand treatment
Assignee: Techniservice Corp
•
Filing: 1968-04-01
•
Granted: 1970-03-17
•
Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 Robert K Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:57
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; B; B65; B65H; B65H57/00; B65H57/12; B65H59/00; B65H59/10; B65H59/16; D02G1/12; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2499888A
Cited
US2289232A
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US2329374A
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US2768057A
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US2851043A
Cited
US2846752A
Cited
US2807863A
Cited
US2988799A
Cited
US3145947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |