US3498771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drawing fine filaments with tension sensing means
Assignee: Polaroid Corp
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Filing: 1968-02-12
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Granted: 1970-03-03
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Expires: 1988-02-12
Abstract
No abstract record available.
Inventors
- 👤 George R Bird
- 👤 Maxfield Parrish Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:53
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/04; B21C37/047; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B37/0253; C03B37/026; C03B37/028; G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3058; C03B2205/00; C03B2205/04; C03B2205/40
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) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |