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Air Management Systems for Stacked Motor Assemblies

US 10,752,373 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Aug 25, 2024 on the fee record · High confidence

First maintenance fee unpaid; grace period ended.

Filed Nov 16, 2017 as application 15/815,513 · Granted Aug 25, 2020
Base term, 20 years from filing, plus 439 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 25, 2024
2017 2039
Clock starts
Nov 16, 2017
No longer in force
Aug 25, 2024
Granted
Aug 25, 2020
Term would have run to
Jan 29, 2039
base term patent term adjustment after the term ends Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
439
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
37
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Jan 29, 2039: its 20-year base term plus 439 days of term adjustment for prosecution delay. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Nov 16, 2017, when this application, 15/815,513, was filedNov 16, 2037High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+439 days, USPTO patent term adjustment recordJan 29, 2039High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidlapsed Aug 25, 2024High confidence
Computed term endThe steps above, in orderAug 25, 2024High confidence

This family

US 9,963,228In force
Feb 2037
Feb 2037
US 10,059,428In force
Nov 2037
Nov 2037
US 10,287,012In force
Jul 2037
Jul 2037
Application 15/459,781Abandoned
not computed
not computed
US 10,501,193In force
Jan 2037
Jan 2037
US 10,752,373this patent
Aug 2024
Aug 2024
US 10,597,164In force
Sep 2037
Sep 2037
US 10,981,661In force
Dec 2037
Dec 2037
8 of 37 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Nov 16, 2017
Reel 44156, frame 499
Groninga, Kirk Landon; Robertson, Daniel BryanBell Helicopter Textron Inc.Assignment of Assignor's Interest
Nov 5, 2019
Reel 50923, frame 492
Bell Helicopter Textron Inc.Textron Innovations Inc.Assignment of Assignor's Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited