US3539989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Symbol reading system
Assignee: General Electric Co
•
Filing: 1966-05-31
•
Granted: 1970-11-10
•
Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Leland J Hanchett Jr
- 👤 Paul R La Bahn
- 👤 Richard E Miford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:34
CPC Classifications
G; G06; G06V; G06V30/00; G06V30/10; G06V30/22; G06V30/224; G06V30/2247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2961649A
Cited
US2952008A
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US3044696A
Cited
US3283303A
Cited
US3303469A
Cited
US3309667A
Cited
US3354432A
Cited
US3286233A
Cited
US3320588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |